Humidity & Temperature Wide Detection Range Sensor Module (DHT22)


The DHT-22 (also known by AM2302) is a digital temperature and humidity sensor module that works with all of the Arduino micro-controllers. 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).

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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.

Simply connect the red 3-5V power, the yellow wire to your data input pin and the black wire to ground. Although it uses a single-wire to send data it is not Dallas One Wire compatible! If you want multiple sensors, each one must have its own data pin!



  • Sensor is composed of a resistive humidity sensing component and an NTC temperature testing component and connects with 8-byte MCU
  • MCU outputs a digital code
  • Fast response and great anti-interference capability
  • Durable and long lasting sensor
  • Low power consumption
  • Based on the DHT22 & AM2302 sensor architecture



    • Operating Voltage: DC 3.3 – 5V
    • Current: Max. 2.5mA
    • Humidity Measurement range: 0% ~100% | ±2-5%RH
    • Temperature Measurement range: -40℃~80℃ | ±0.5 ℃
    • Sampling rate: 0.5Hz every 2 seconds
    • Connections; GND, Vcc, and Signal
    • 4.2 cm x 1.5 cm x 10.0 cm
    • Weight 7.0g