DHT22 is a popular digital sensor used to measure temperature and humidity. It's part of the DHT series, which also includes the DHT11, with the DHT22 offering higher accuracy and a wider range of measurements.
Length: 28mm X width 12mm X height 10mm
Working voltage: DC 3.3-5.5V
Humidity measurement range: 0---RH
Humidity measurement accuracy: ±2%RH
Temperature measurement range: -40---80℃
Temperature measurement accuracy: ±0.5℃
Working voltage: DC5V commonly used
Single bus digital signal output, serial data bidirectional port