













Industrial USB TO 4CH RS485
Communication Module
Stable Transmission | Multi Devices | Multi Systems

Features
- Extending USB to 4CH RS485, allows concurrent and independent communication for each channel
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
- Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance
- Onboard RS485 output terminal 120R resistors, enabled/disabled via DIP switch
- Aluminium alloy case with oxidation dull-polish surface, CNC process opening, solid and durable, well-crafted

Specifications
PRODUCT TYPE | Industrial Grade USB to RS485 converter | |
---|---|---|
HOST PORT | USB | |
DEVICE PORT | RS485 | |
BAUDRATE | 1200bps ~ 460800bps | |
USB | Operating voltage | 5V |
Connector | USB-B | |
Protection | 500mA resettable fuse, ESD protection | |
Transmission distance | About 5m | |
RS485 | Connector | Screw terminal |
Protection | 600W lightningproof and surge-suppress, 15KV ESD protection | |
Transmission distance | Maximum communication distance is about 1200m (at a low rate, with 120R resistor turned on) | |
Transmission mode | Point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more) | |
OPERATING ENVIRONMENT | Temperature | -40 ~ 85℃ |
Humidity | 5%RH ~ 95%RH | |
OPERATING SYSTEM | Win7/8/8.1/10/11, Mac, Linux, Android |
Multiple Protection, Safe And Stable
Onboard Resettable Fuse And Protection Diode, Provides Over-Current/Over-Voltage Proof, Improves Shock Proof Performance; Onboard Voltage Translator Circuit, With Surge Suppress And ESD Protection, Safe And Stable Communication

Multi System Support
Supports Win7/8/8.1/10/11, Mac, Linux, Android, Etc.

Transmission Distance Up To 1.2km
The USB Signal Can Be Converted Into 4 Balanced Differential RS485 Signals And The Transmission Rate Is Stable. The Reliable Speed Is 1200~460800bps, The Transmission Distance Is About 1.2km For RS485, And About 5 Meters For USB.

Wall-Mount & Rail-Mount Support

Interface

INDICATOR INTRODUCTION | |
---|---|
PWR | power indicator, lights up while the USB is connected and voltage is detected |
ACT | Status indicator, lights up green while the driver is detected. |
RXD(1~4) | Blue RXD indicators, light up when the device ports send data back (corresponding to 4 channels respectively) |
TXD(1~4) | Blue TXD indicators, light up when the USB port is sending data (corresponding to 4 channels respectively) |
Pin Description

PE | Signal ground |
---|---|
A(1~4) | A(1~4) differential signal A+ |
B(1~4) | B(1~4) differential signal B- |
Dimensions

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I received the order within one day, in good condition.
Nice Product
I've been shown the "free shipping over 999" banner but haven't been given free shipping. It's OK to charge shipping but do keep a proper disclaimer about which areas are served free.
Also, after this order was received, I wanted to place another order, before which I got 2 emails about Rs. 5 store credit. I should be getting a 10rs discount, but there's not a place on the website or app where I can redeem this amount.
Please improve. Don't unnecessarily make promises and spoil the brand's reputation. If this is on social media, it'll be a very bad look.