DHT22 Digital Temperature and Humidity Sensor (AM2302)


  • Read temperature and humidity indoors or outdoors
  • DHT-22’s accuracy is of ±0.5°C in the range –10~80°C and 5% in the entire RH range
  • Pinout is VCC, GND, Data, and NC (not connected). Supply voltage range is 3.3~6VDC
  • DHT-22 includes a built-in bit ADC, which yields data with 8-bit resolution


SKU: SEN-00003 Categories: , Tag:


The fantastic DHT22 temperature and humidity sensor comes enclosed in a plastic permeable casing that allows it to measure the surrounding air while being resilient to damage by changes in the environment. The casing protects the electronics inside while allowing air to pass through for measuring temperature and humidity.

Because the measured data is transmitted digitally, there is no signal degradation over long distances. The data transmission uses a 1-Wire proprietary protocol, for which Open-Source libraries are available for platforms such as Arduino boards, ESP8266, Raspberry Pi, and other microcontrollers and single-board computers.


  • Usable temperature range: –40~80°C and 0~100% RH
  • Resolution: 8-bit
  • Communication: 1-Wire protocol
  • Accuracy: ±0.5°C in the range –10~80°C and 5% in the entire RH range
  • Operating Voltage: 3.3~6V (power/data)

Additional information

Product Dimensions

0.45 x 0.66 x 0.2 inches

Item Weight

0.634 ounces



Date First Available

March 31, 2017




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