Name: Industrial 1-Channel ESP32-S3 WiFi Relay Module
Brand: Waveshare
SKU: WVSH0559
Price: 1949.99 INR
Availability: InStock

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{"id":10200919540029,"title":"Industrial 1-Channel ESP32-S3 WiFi Relay Module","handle":"industrial-1-channel-esp32-s3-wifi-relay-module","description":"\u003ch2 style=\"text-align: center;\"\u003eIndustrial 1-Ch ESP32-S3 WiFi Relay Module\u003c\/h2\u003e\n\u003ch3 style=\"text-align: center;\"\u003eBased on ESP32-S3, Supports Wi-Fi \/ Bluetooth, Onboard RS485 interface\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eBuilt-in protection circuits such as power isolation and optocoupler isolation, Safe \u0026amp; Stable \u0026amp; Reliable\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, front view\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-1.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eFeatures\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable height=\"492\" style=\"border-collapse: collapse; width: 81.9%; margin-left: auto; margin-right: auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eBased on ESP32-S3 microcontroller with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eIntegrated 2.4GHz Wi-Fi and Bluetooth 5 (LE) dual-mode wireless communication, with superior RF performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eHigh quality relay, contact rating: ≤10A 250VAC \/ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard isolated RS485 interface, for connecting to various RS485 Modbus industrial modules or sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard RTC chip, supports scheduled tasks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard USB Type-C port for power supply, firmware downloading and debugging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard power supply screw terminal, supports 5V power supply only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard optocoupler isolation to prevent interference from external high-voltage circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard digital isolation to prevent interference from external signals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard unibody power supply isolation, providing stable isolated voltage; no extra power supply is required for the isolated terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard RS485 TX\/RX indicators for monitoring the operating status of the module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eRail-mounted protective case, easy to install and safe to use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSpecifications\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ctable style=\"border-collapse: collapse; width: 81.9%; margin-left: auto; margin-right: auto; height: 685.902px;\" height=\"599\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 39.1944px;\"\u003e\u003cstrong\u003eMicrocontroller\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 74.6394%; text-align: center; height: 39.1944px;\" colspan=\"2\"\u003eESP32-S3 (Default module: ESP32-S3R8, customizable for other modules)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 39.1944px;\"\u003e\u003cstrong\u003eWireless communication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 74.6394%; text-align: center; height: 39.1944px;\" colspan=\"2\"\u003e2.4GHz WiFi (802.11 b\/g\/n), Bluetooth 5 (LE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 97.986px;\" rowspan=\"3\"\u003e\u003cstrong\u003eUSB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eConnector\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003eUSB Type-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003ePower supply\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eFunctions\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003ePower supply, USB communication, firmware downloading, etc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 137.18px;\" rowspan=\"4\"\u003e\u003cstrong\u003eIsolated RS485\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eConnector\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003eScrew terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eDirection control\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eAutomatically controlled via main controller hardware flow settings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eProtection\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eTVS diode, surge protection \u0026amp; ESD protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eResistor\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eOnboard reserved 120R matching resistor, NC by default, enabled via jumper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 137.18px;\" rowspan=\"4\"\u003e\u003cstrong\u003eRelay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eContact rating\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e≤10A 250VAC \/ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eRelay channel\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eContact form\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e1 NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eIsolation\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003eOptocoupler isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 156.778px;\" rowspan=\"3\"\u003e\u003cstrong\u003eLED Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003ePWR indicator\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eRed power indicator, lights up when there is USB connection and voltage is detected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eRelay indicator\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eLights up when the Normally Open (NO) is closed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.3889px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 78.3889px;\"\u003eRS485 indicator\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 78.3889px;\"\u003eLights up green when the RS485 port sends data\u003cbr\u003eLights up blue when the RS485 port receives data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 39.1944px;\"\u003e\u003cstrong\u003ePower supply screw terminal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eVoltage range\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 39.1944px;\" rowspan=\"2\"\u003e\u003cstrong\u003eAppearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eEnclosure\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003eRail-mount protective case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003e91.6 × 23.3 × 58.7 (mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eBased on ESP32-S3, Designed for AIoT Market\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eEquipped with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz, with Powerful AI Computing Performance and Security Encryption Mechanism; Integrated 2.4GHz Wi-Fi and Bluetooth 5 (LE) dual-mode wireless communication\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, based on ESP32-S3\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-3.jpg\"\u003e\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eOnboard Multiple Isolation Protection Circuits\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eMultiple protections, more safe and reliable\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, multiple isolation protection circuits\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-5.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eHigh Quality 1-Ch Relay, Supports RS485 and Bluetooth \/ WIFi Remote Control\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eContact rating of the onboard relay up to 10A 250VAC\/30VDC\u003cbr\u003eDirectly controlling 220VAC home appliances, or devices below 30VDC\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, connection methods\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-7.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSupports Arduino Development\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eComprehensive SDK, Dev Resources, And Tutorials To Help You Easily Get Started\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/general\/dev_platforms\/Arduino-IDE.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eApplication Example\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eProvides Multiple Networking Demos With Waveshare.Cloud, Using The Lightweight MQTT Protocol To Achieve Data Visualization Service\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-11.jpg\" alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, application example\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eInterface Description\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-17.jpg\" alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, interface description\"\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 81.9%; height: 254.764px; margin-left: auto; margin-right: auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003cth style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 68.4854%; text-align: center;\" colspan=\"3\"\u003e\u003cstrong\u003eTop Terminal Block Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 31.4901%; text-align: center;\" colspan=\"2\"\u003e\u003cstrong\u003eBottom Terminal Block Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c!-- POWER SUPPLY TERMINAL --\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3888px; width: 19.3785%; text-align: center;\" rowspan=\"2\"\u003e\u003cstrong\u003ePower Supply Terminal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 49.1069%; text-align: center;\" colspan=\"2\"\u003ePower positive: DC 5V\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3888px; width: 17.3966%; text-align: center;\" rowspan=\"2\"\u003e\u003cstrong\u003eRS485 Terminal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 14.0935%; text-align: center;\"\u003eA+ signal pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 49.1069%; text-align: center;\" colspan=\"2\"\u003ePower negative\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 14.0935%; text-align: center;\"\u003eB- signal pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c!-- TYPE-C --\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 19.3785%; text-align: center;\"\u003e\u003cstrong\u003eType-C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.1069%; text-align: center;\" colspan=\"2\"\u003efor power supply, firmware download, and USB communication\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 17.3966%; text-align: center;\" rowspan=\"2\"\u003e\u003cstrong\u003eRelay Terminal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 14.0935%; text-align: center;\"\u003eRelay COM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3888px; width: 19.3785%; text-align: center;\" rowspan=\"4\"\u003e\u003cstrong\u003eSH1.0\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003eGND\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 35.0135%; text-align: center;\"\u003eGround (GND)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003eRelay NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c!-- SH1.0 DETAILS --\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003e3V3\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 35.0135%; text-align: center;\"\u003e3.3V power output\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 17.3966%; text-align: center;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%;\"\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003eGPIO2\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 35.0135%; text-align: center;\"\u003eESP32-S3 IO pin\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 17.3966%; text-align: center;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%;\"\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003eGPIO1\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 35.0135%; text-align: center;\"\u003eESP32-S3 IO pin\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 17.3966%;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%;\"\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-15.jpg\" alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, pin definition\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eWhat's On Board\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, onboard components\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-intro.jpg\"\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 81.9%; height: 786px; margin-left: auto; margin-right: auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e1. ESP32-S3\u003cbr\u003eup to 240MHz operating frequency, with 2.4GHz WiFi and BLE\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e12. ESP32 BOOT button\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 49.4817%; text-align: center;\"\u003e2. DC-DC power module\u003cbr\u003esupports up to 3.3V 2A output\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 50.4957%; text-align: center;\"\u003e13. ESP32 RESET button\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.3889px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 49.4817%; text-align: center;\"\u003e3. Pin header (2.0mm pitch)\u003cbr\u003efor connecting to other functional modules\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 50.4957%; text-align: center;\"\u003e14. TVS diode\u003cbr\u003eEffectively suppresses surge voltage and transient spike voltage in the circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e4. Power supply screw terminal\u003cbr\u003esupports DC 5V voltage input\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e15. Quality relay\u003cbr\u003econtact rating: ≤10A 250V AC or ≤10A 30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e5. USB Type-C port\u003cbr\u003efor module power supply, firmware downloading and USB communication\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e16. RS485 matching resistor\u003cbr\u003eOnboard reserved 120R matching resistor, enabled via jumper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e6. RTC battery header\u003cbr\u003efor connecting rechargeable RTC battery (SH1.0)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e17. RS485 and relay terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e7. Onboard ceramic antenna\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e18. PCF85063 RTC chip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.3889px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 49.4817%; text-align: center;\"\u003e8. IPEX 1 connector\u003cbr\u003efor connecting external antenna, enabled via resoldering an onboard resistor\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 50.4957%; text-align: center;\"\u003e19. 16MB Flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 137.181px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 137.181px; width: 49.4817%; text-align: center;\"\u003e9. LED indicators\u003cbr\u003ePWR: Power indicator\u003cbr\u003eRELAY: Relay indicator, lights up when the Normally Open (NO) is closed\u003cbr\u003eRS485: lights up green when the RS485 port sends data; lights up blue when the RS485 port receives data\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 137.181px; width: 50.4957%; text-align: center;\"\u003e20. Digital isolation\u003cbr\u003eprevents interference from external signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 49.4817%; text-align: center;\"\u003e10. Optocoupler isolation\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 50.4957%; text-align: center;\"\u003e21. RS485 transceiver chip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.3889px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 49.4817%; text-align: center;\"\u003e11. Power supply isolation\u003cbr\u003eProvides stable isolated voltage, no extra power supply is required for the isolated terminal\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 50.4957%; text-align: center;\"\u003e22. ME6217C33M5G\u003cbr\u003eLow dropout regulator, 800mA output (Max.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 49.4817%;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 50.4957%; text-align: center;\"\u003e23. Thicken track for large current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eEnclosure Design\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eProtection Enclosure With Rail-Mount Support, Easy To Install, Safe To Use\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, with rail-mount case\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-13.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eOutline Dimensions\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, outline dimensions\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-size.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSupport Batch Customization\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eSupport software and hardware customization\u003cbr\u003eIncluding hardware interface, LOGO, label, case and web page, etc.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/RS232-485-422-TO-POE-ETH-B\/RS232-485-422-TO-POE-ETH-B-details-29.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eResources \u0026amp; Services\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eWiki: \u003ca id=\"tab-wiki\" href=\"http:\/\/www.waveshare.com\/wiki\/ESP32-S3-Relay-1CH\" target=\"_blank\"\u003ewww.waveshare.com\/wiki\/ESP32-S3-Relay-1CH\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003ePackage Content\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.077 kg\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eESP32-S3-Relay-1CH x1\u003cbr\u003eSH1.0 4PIN cable ~150mm x1\u003cbr\u003eScrewdriver x1\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/Screenshot_8-1-2026_163425_www.waveshare.com.jpg?v=1767870274\"\u003e\u003c\/p\u003e","published_at":"2026-01-29T10:59:41+05:30","created_at":"2026-01-08T16:36:20+05:30","vendor":"Waveshare","type":"Industrial Automation and Controls","tags":["1 Channel Relay","10A Relay","AIoT Controller","Automation Control","Bluetooth Relay","DIN Rail Relay","Embedded Controller","ESP32 S3","ESP32 S3 Relay","IN-OUT-MOD","Industrial Automation and Controls","Industrial IO","Industrial Relay Module","Isolated Relay","Modbus Relay","MQTT Relay","Optocoupler Isolation","Remote Relay Control","RS485 Relay","Smart Factory","WaveSH","Waveshare","WiFi Relay","WVSH"],"price":194999,"price_min":194999,"price_max":194999,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":51229732143421,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"WVSH0559","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Industrial 1-Channel ESP32-S3 WiFi Relay Module","public_title":null,"options":["Default Title"],"price":194999,"weight":30,"compare_at_price":null,"inventory_management":"shopify","barcode":"WVSH0559","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-1.jpg?v=1767870365","\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-2.jpg?v=1767870365","\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-3.jpg?v=1767870365","\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-4.jpg?v=1767870364","\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-5.jpg?v=1767870364"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-1.jpg?v=1767870365","options":["Title"],"media":[{"alt":null,"id":48637974905149,"position":1,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-1.jpg?v=1767870365"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-1.jpg?v=1767870365","width":800},{"alt":null,"id":48637974872381,"position":2,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-2.jpg?v=1767870365"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-2.jpg?v=1767870365","width":800},{"alt":null,"id":48637974839613,"position":3,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-3.jpg?v=1767870365"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-3.jpg?v=1767870365","width":800},{"alt":null,"id":48637974806845,"position":4,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-4.jpg?v=1767870364"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-4.jpg?v=1767870364","width":800},{"alt":null,"id":48637974774077,"position":5,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-5.jpg?v=1767870364"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/esp32-s3-relay-1ch-5.jpg?v=1767870364","width":800}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch2 style=\"text-align: center;\"\u003eIndustrial 1-Ch ESP32-S3 WiFi Relay Module\u003c\/h2\u003e\n\u003ch3 style=\"text-align: center;\"\u003eBased on ESP32-S3, Supports Wi-Fi \/ Bluetooth, Onboard RS485 interface\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eBuilt-in protection circuits such as power isolation and optocoupler isolation, Safe \u0026amp; Stable \u0026amp; Reliable\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, front view\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-1.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eFeatures\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable height=\"492\" style=\"border-collapse: collapse; width: 81.9%; margin-left: auto; margin-right: auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eBased on ESP32-S3 microcontroller with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eIntegrated 2.4GHz Wi-Fi and Bluetooth 5 (LE) dual-mode wireless communication, with superior RF performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eHigh quality relay, contact rating: ≤10A 250VAC \/ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard isolated RS485 interface, for connecting to various RS485 Modbus industrial modules or sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard RTC chip, supports scheduled tasks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard USB Type-C port for power supply, firmware downloading and debugging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard power supply screw terminal, supports 5V power supply only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard optocoupler isolation to prevent interference from external high-voltage circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard digital isolation to prevent interference from external signals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard unibody power supply isolation, providing stable isolated voltage; no extra power supply is required for the isolated terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eOnboard RS485 TX\/RX indicators for monitoring the operating status of the module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 100%; text-align: center;\"\u003eRail-mounted protective case, easy to install and safe to use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSpecifications\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ctable style=\"border-collapse: collapse; width: 81.9%; margin-left: auto; margin-right: auto; height: 685.902px;\" height=\"599\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 39.1944px;\"\u003e\u003cstrong\u003eMicrocontroller\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 74.6394%; text-align: center; height: 39.1944px;\" colspan=\"2\"\u003eESP32-S3 (Default module: ESP32-S3R8, customizable for other modules)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 39.1944px;\"\u003e\u003cstrong\u003eWireless communication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 74.6394%; text-align: center; height: 39.1944px;\" colspan=\"2\"\u003e2.4GHz WiFi (802.11 b\/g\/n), Bluetooth 5 (LE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 97.986px;\" rowspan=\"3\"\u003e\u003cstrong\u003eUSB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eConnector\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003eUSB Type-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003ePower supply\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eFunctions\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003ePower supply, USB communication, firmware downloading, etc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 137.18px;\" rowspan=\"4\"\u003e\u003cstrong\u003eIsolated RS485\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eConnector\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003eScrew terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eDirection control\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eAutomatically controlled via main controller hardware flow settings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eProtection\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eTVS diode, surge protection \u0026amp; ESD protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eResistor\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eOnboard reserved 120R matching resistor, NC by default, enabled via jumper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 137.18px;\" rowspan=\"4\"\u003e\u003cstrong\u003eRelay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eContact rating\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e≤10A 250VAC \/ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eRelay channel\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eContact form\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e1 NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eIsolation\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003eOptocoupler isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 156.778px;\" rowspan=\"3\"\u003e\u003cstrong\u003eLED Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003ePWR indicator\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eRed power indicator, lights up when there is USB connection and voltage is detected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eRelay indicator\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003eLights up when the Normally Open (NO) is closed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.3889px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 78.3889px;\"\u003eRS485 indicator\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 78.3889px;\"\u003eLights up green when the RS485 port sends data\u003cbr\u003eLights up blue when the RS485 port receives data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 39.1944px;\"\u003e\u003cstrong\u003ePower supply screw terminal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 39.1944px;\"\u003eVoltage range\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 39.1944px;\"\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 25.2404%; text-align: center; height: 39.1944px;\" rowspan=\"2\"\u003e\u003cstrong\u003eAppearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eEnclosure\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003eRail-mount protective case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 16.4062%; text-align: center; height: 19.5972px;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); width: 58.2332%; text-align: center; height: 19.5972px;\"\u003e91.6 × 23.3 × 58.7 (mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eBased on ESP32-S3, Designed for AIoT Market\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eEquipped with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz, with Powerful AI Computing Performance and Security Encryption Mechanism; Integrated 2.4GHz Wi-Fi and Bluetooth 5 (LE) dual-mode wireless communication\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, based on ESP32-S3\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-3.jpg\"\u003e\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eOnboard Multiple Isolation Protection Circuits\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eMultiple protections, more safe and reliable\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, multiple isolation protection circuits\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-5.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eHigh Quality 1-Ch Relay, Supports RS485 and Bluetooth \/ WIFi Remote Control\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eContact rating of the onboard relay up to 10A 250VAC\/30VDC\u003cbr\u003eDirectly controlling 220VAC home appliances, or devices below 30VDC\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, connection methods\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-7.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSupports Arduino Development\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eComprehensive SDK, Dev Resources, And Tutorials To Help You Easily Get Started\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/general\/dev_platforms\/Arduino-IDE.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eApplication Example\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eProvides Multiple Networking Demos With Waveshare.Cloud, Using The Lightweight MQTT Protocol To Achieve Data Visualization Service\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-11.jpg\" alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, application example\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eInterface Description\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-17.jpg\" alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, interface description\"\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 81.9%; height: 254.764px; margin-left: auto; margin-right: auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003cth style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 68.4854%; text-align: center;\" colspan=\"3\"\u003e\u003cstrong\u003eTop Terminal Block Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 31.4901%; text-align: center;\" colspan=\"2\"\u003e\u003cstrong\u003eBottom Terminal Block Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c!-- POWER SUPPLY TERMINAL --\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3888px; width: 19.3785%; text-align: center;\" rowspan=\"2\"\u003e\u003cstrong\u003ePower Supply Terminal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 49.1069%; text-align: center;\" colspan=\"2\"\u003ePower positive: DC 5V\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3888px; width: 17.3966%; text-align: center;\" rowspan=\"2\"\u003e\u003cstrong\u003eRS485 Terminal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 14.0935%; text-align: center;\"\u003eA+ signal pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 49.1069%; text-align: center;\" colspan=\"2\"\u003ePower negative\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 14.0935%; text-align: center;\"\u003eB- signal pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c!-- TYPE-C --\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 19.3785%; text-align: center;\"\u003e\u003cstrong\u003eType-C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.1069%; text-align: center;\" colspan=\"2\"\u003efor power supply, firmware download, and USB communication\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 17.3966%; text-align: center;\" rowspan=\"2\"\u003e\u003cstrong\u003eRelay Terminal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 14.0935%; text-align: center;\"\u003eRelay COM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3888px; width: 19.3785%; text-align: center;\" rowspan=\"4\"\u003e\u003cstrong\u003eSH1.0\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003eGND\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 35.0135%; text-align: center;\"\u003eGround (GND)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003eRelay NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c!-- SH1.0 DETAILS --\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003e3V3\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 35.0135%; text-align: center;\"\u003e3.3V power output\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 17.3966%; text-align: center;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%;\"\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003eGPIO2\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 35.0135%; text-align: center;\"\u003eESP32-S3 IO pin\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 17.3966%; text-align: center;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%;\"\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%; text-align: center;\"\u003eGPIO1\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 35.0135%; text-align: center;\"\u003eESP32-S3 IO pin\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 17.3966%;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 14.0935%;\"\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-15.jpg\" alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, pin definition\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eWhat's On Board\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, onboard components\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-intro.jpg\"\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 81.9%; height: 786px; margin-left: auto; margin-right: auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e1. ESP32-S3\u003cbr\u003eup to 240MHz operating frequency, with 2.4GHz WiFi and BLE\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e12. ESP32 BOOT button\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 49.4817%; text-align: center;\"\u003e2. DC-DC power module\u003cbr\u003esupports up to 3.3V 2A output\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 39.1944px; width: 50.4957%; text-align: center;\"\u003e13. ESP32 RESET button\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.3889px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 49.4817%; text-align: center;\"\u003e3. Pin header (2.0mm pitch)\u003cbr\u003efor connecting to other functional modules\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 50.4957%; text-align: center;\"\u003e14. TVS diode\u003cbr\u003eEffectively suppresses surge voltage and transient spike voltage in the circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e4. Power supply screw terminal\u003cbr\u003esupports DC 5V voltage input\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e15. Quality relay\u003cbr\u003econtact rating: ≤10A 250V AC or ≤10A 30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e5. USB Type-C port\u003cbr\u003efor module power supply, firmware downloading and USB communication\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e16. RS485 matching resistor\u003cbr\u003eOnboard reserved 120R matching resistor, enabled via jumper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e6. RTC battery header\u003cbr\u003efor connecting rechargeable RTC battery (SH1.0)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e17. RS485 and relay terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7917px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 49.4817%; text-align: center;\"\u003e7. Onboard ceramic antenna\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 58.7917px; width: 50.4957%; text-align: center;\"\u003e18. PCF85063 RTC chip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.3889px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 49.4817%; text-align: center;\"\u003e8. IPEX 1 connector\u003cbr\u003efor connecting external antenna, enabled via resoldering an onboard resistor\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 50.4957%; text-align: center;\"\u003e19. 16MB Flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 137.181px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 137.181px; width: 49.4817%; text-align: center;\"\u003e9. LED indicators\u003cbr\u003ePWR: Power indicator\u003cbr\u003eRELAY: Relay indicator, lights up when the Normally Open (NO) is closed\u003cbr\u003eRS485: lights up green when the RS485 port sends data; lights up blue when the RS485 port receives data\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 137.181px; width: 50.4957%; text-align: center;\"\u003e20. Digital isolation\u003cbr\u003eprevents interference from external signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 49.4817%; text-align: center;\"\u003e10. Optocoupler isolation\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 50.4957%; text-align: center;\"\u003e21. RS485 transceiver chip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.3889px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 49.4817%; text-align: center;\"\u003e11. Power supply isolation\u003cbr\u003eProvides stable isolated voltage, no extra power supply is required for the isolated terminal\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 78.3889px; width: 50.4957%; text-align: center;\"\u003e22. ME6217C33M5G\u003cbr\u003eLow dropout regulator, 800mA output (Max.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 49.4817%;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); height: 19.5972px; width: 50.4957%; text-align: center;\"\u003e23. Thicken track for large current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eEnclosure Design\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eProtection Enclosure With Rail-Mount Support, Easy To Install, Safe To Use\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, with rail-mount case\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-13.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eOutline Dimensions\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"Industrial 1-Channel ESP32-S3 WiFi Relay Module, outline dimensions\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/ESP32-S3-Relay-1CH\/ESP32-S3-Relay-1CH-details-size.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSupport Batch Customization\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eSupport software and hardware customization\u003cbr\u003eIncluding hardware interface, LOGO, label, case and web page, etc.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/RS232-485-422-TO-POE-ETH-B\/RS232-485-422-TO-POE-ETH-B-details-29.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eResources \u0026amp; Services\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eWiki: \u003ca id=\"tab-wiki\" href=\"http:\/\/www.waveshare.com\/wiki\/ESP32-S3-Relay-1CH\" target=\"_blank\"\u003ewww.waveshare.com\/wiki\/ESP32-S3-Relay-1CH\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003ePackage Content\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.077 kg\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eESP32-S3-Relay-1CH x1\u003cbr\u003eSH1.0 4PIN cable ~150mm x1\u003cbr\u003eScrewdriver x1\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/Screenshot_8-1-2026_163425_www.waveshare.com.jpg?v=1767870274\"\u003e\u003c\/p\u003e"}

1. ESP32-S3 up to 240MHz operating frequency, with 2.4GHz WiFi and BLE	12. ESP32 BOOT button
2. DC-DC power module supports up to 3.3V 2A output	13. ESP32 RESET button
3. Pin header (2.0mm pitch) for connecting to other functional modules	14. TVS diode Effectively suppresses surge voltage and transient spike voltage in the circuit
4. Power supply screw terminal supports DC 5V voltage input	15. Quality relay contact rating: ≤10A 250V AC or ≤10A 30V DC
5. USB Type-C port for module power supply, firmware downloading and USB communication	16. RS485 matching resistor Onboard reserved 120R matching resistor, enabled via jumper
6. RTC battery header for connecting rechargeable RTC battery (SH1.0)	17. RS485 and relay terminal
7. Onboard ceramic antenna	18. PCF85063 RTC chip
8. IPEX 1 connector for connecting external antenna, enabled via resoldering an onboard resistor	19. 16MB Flash
9. LED indicators PWR: Power indicator RELAY: Relay indicator, lights up when the Normally Open (NO) is closed RS485: lights up green when the RS485 port sends data; lights up blue when the RS485 port receives data	20. Digital isolation prevents interference from external signal
10. Optocoupler isolation	21. RS485 transceiver chip
11. Power supply isolation Provides stable isolated voltage, no extra power supply is required for the isolated terminal	22. ME6217C33M5G Low dropout regulator, 800mA output (Max.)
	23. Thicken track for large current

Industrial 1-Channel ESP32-S3 WiFi Relay Module

Industrial 1-Ch ESP32-S3 WiFi Relay Module

Based on ESP32-S3, Supports Wi-Fi / Bluetooth, Onboard RS485 interface

Features

Specifications

Based on ESP32-S3, Designed for AIoT Market

Onboard Multiple Isolation Protection Circuits

High Quality 1-Ch Relay, Supports RS485 and Bluetooth / WIFi Remote Control

Supports Arduino Development

Application Example

Interface Description

What's On Board

Enclosure Design

Outline Dimensions

Support Batch Customization

Resources & Services

Package Content

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Customer Reviews

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Microcontroller	ESP32-S3 (Default module: ESP32-S3R8, customizable for other modules)
Wireless communication	2.4GHz WiFi (802.11 b/g/n), Bluetooth 5 (LE)
USB	Connector	USB Type-C
	Power supply	5V
	Functions	Power supply, USB communication, firmware downloading, etc.
Isolated RS485	Connector	Screw terminal
	Direction control	Automatically controlled via main controller hardware flow settings
	Protection	TVS diode, surge protection & ESD protection
	Resistor	Onboard reserved 120R matching resistor, NC by default, enabled via jumper
Relay	Contact rating	≤10A 250VAC / 30VDC
	Relay channel	1
	Contact form	1 NO
	Isolation	Optocoupler isolation
LED Indicators	PWR indicator	Red power indicator, lights up when there is USB connection and voltage is detected
	Relay indicator	Lights up when the Normally Open (NO) is closed
	RS485 indicator	Lights up green when the RS485 port sends data Lights up blue when the RS485 port receives data
Power supply screw terminal	Voltage range	5V
Appearance	Enclosure	Rail-mount protective case
Appearance	Dimensions	91.6 × 23.3 × 58.7 (mm)

Top Terminal Block Description			Bottom Terminal Block Description
Power Supply Terminal	Power positive: DC 5V		RS485 Terminal	A+ signal pin
Power Supply Terminal	Power negative		RS485 Terminal	B- signal pin
Type-C	for power supply, firmware download, and USB communication		Relay Terminal	Relay COM
SH1.0	GND	Ground (GND)	Relay Terminal	Relay NO
	3V3	3.3V power output
	GPIO2	ESP32-S3 IO pin
	GPIO1	ESP32-S3 IO pin