The DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old.
Compared to the DHT22, this sensor is less precise, less accurate and works in a smaller range of temperature/humidity, but its smaller and less expensive
Comes with a 4.7K or 10K resistor, which you will want to use as a pullup from the data pin to VCC.
Low cost
3 to 5V power and I/O
2.5mA max current use during conversion (while requesting data)
Good for 20-80% humidity readings with 5% accuracy
Good for 0-50°C temperature readings ±2°C accuracy
No more than 1 Hz sampling rate (once every second)
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{"id":1415960199240,"title":"DHT11 Temperature and Humidity Module","handle":"dht11-temperature-and-humidity-sensor-module","description":"\u003cp\u003e\u003cspan\u003eThe DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eCompared to the \u003ca title=\"DHT22 Humidity \u0026amp; Temperature Sensor\" href=\"https:\/\/thinkrobotics.in\/products\/dht22-temperature-and-humidity-sensor-module\"\u003eDHT22\u003c\/a\u003e, this sensor is less precise, less accurate and works in a smaller range of temperature\/humidity, but its smaller and less expensive\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eComes with a 4.7K or 10K resistor, which you will want to use as a pullup from the data pin to VCC.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow cost\u003c\/li\u003e\n\u003cli\u003e3 to 5V power and I\/O\u003c\/li\u003e\n\u003cli\u003e2.5mA max current use during conversion (while requesting data)\u003c\/li\u003e\n\u003cli\u003eGood for 20-80% humidity readings with 5% accuracy\u003c\/li\u003e\n\u003cli\u003eGood for 0-50°C temperature readings ±2°C accuracy\u003c\/li\u003e\n\u003cli\u003eNo more than 1 Hz sampling rate (once every second)\u003c\/li\u003e\n\u003cli\u003eBody size 15.5mm x 12mm x 5.5mm\u003c\/li\u003e\n\u003cli\u003e4 pins with 0.1\" spacing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cdiv\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/DHT11_Pinout_480x480.png?v=1585751658\"\u003e\u003c\/div\u003e\n\u003ch5\u003eResources\u003cbr\u003e\n\u003c\/h5\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/DATASHEET\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1006\" target=\"_blank\"\u003eDatasheets\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/LIBRARIES\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1006\" target=\"_blank\"\u003eLibraries \u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/SAMPLE_CODE\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1006\" target=\"_blank\"\u003eSample Code\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003ch5\u003eTutorials\u003c\/h5\u003e\n\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/m121jV4dgxU\" height=\"315\" width=\"560\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/nssXWNYdGT8\" height=\"315\" width=\"560\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\n\u003cp\u003e \u003c\/p\u003e","published_at":"2022-12-06T11:28:10+05:30","created_at":"2018-08-31T18:16:44+05:30","vendor":"ThinkRobotics.in","type":"Sensor","tags":["Arduino Sensor","DHT11","ELC1","ENVR-SNR","Humidity and Temperature","Humidity Sensor","Temperature Sensor"],"price":10999,"price_min":10999,"price_max":12499,"available":true,"price_varies":true,"compare_at_price":14500,"compare_at_price_min":14500,"compare_at_price_max":14500,"compare_at_price_varies":false,"variants":[{"id":39564472254550,"title":"Module","option1":"Module","option2":null,"option3":null,"sku":"ELC1006M","requires_shipping":true,"taxable":true,"featured_image":{"id":14597599264854,"product_id":1415960199240,"position":4,"created_at":"2020-04-01T20:16:51+05:30","updated_at":"2020-04-01T20:16:51+05:30","alt":"DHT11 Temperature and Humidity Module","width":3024,"height":4032,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/20190601_125006.jpg?v=1585752411","variant_ids":[39564472254550]},"available":true,"name":"DHT11 Temperature and Humidity Module - 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It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eCompared to the \u003ca title=\"DHT22 Humidity \u0026amp; Temperature Sensor\" href=\"https:\/\/thinkrobotics.in\/products\/dht22-temperature-and-humidity-sensor-module\"\u003eDHT22\u003c\/a\u003e, this sensor is less precise, less accurate and works in a smaller range of temperature\/humidity, but its smaller and less expensive\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eComes with a 4.7K or 10K resistor, which you will want to use as a pullup from the data pin to VCC.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow cost\u003c\/li\u003e\n\u003cli\u003e3 to 5V power and I\/O\u003c\/li\u003e\n\u003cli\u003e2.5mA max current use during conversion (while requesting data)\u003c\/li\u003e\n\u003cli\u003eGood for 20-80% humidity readings with 5% accuracy\u003c\/li\u003e\n\u003cli\u003eGood for 0-50°C temperature readings ±2°C accuracy\u003c\/li\u003e\n\u003cli\u003eNo more than 1 Hz sampling rate (once every second)\u003c\/li\u003e\n\u003cli\u003eBody size 15.5mm x 12mm x 5.5mm\u003c\/li\u003e\n\u003cli\u003e4 pins with 0.1\" spacing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cdiv\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/DHT11_Pinout_480x480.png?v=1585751658\"\u003e\u003c\/div\u003e\n\u003ch5\u003eResources\u003cbr\u003e\n\u003c\/h5\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/DATASHEET\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1006\" target=\"_blank\"\u003eDatasheets\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/LIBRARIES\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1006\" target=\"_blank\"\u003eLibraries \u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/SAMPLE_CODE\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1006\" target=\"_blank\"\u003eSample Code\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003ch5\u003eTutorials\u003c\/h5\u003e\n\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/m121jV4dgxU\" height=\"315\" width=\"560\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/nssXWNYdGT8\" height=\"315\" width=\"560\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\n\u003cp\u003e \u003c\/p\u003e"}
