DHT 22 AM2302 Temperature/Humidity Sensor


10 in stock


DHT 22 AM2302 Temperature/Humidity Sensor

This a popular Temperature/Humidity sensor used upon Ardunio Weather/temperature/humidity  projects.

  • Full range temperature compensated
  • Relative humidity and temperature measurement
  • Calibrated digital signal
  • Outstanding long-term stability
  • Extra components not needed
  • Long transmission distance
  • Low power consumption
  • 4 pins packaged and fully interchangeable

Technical Specification:

Model: DHT22
Power supply: 3.3-6V DC
Output signal: digital signal via single-bus
Sensing element: Polymer capacitor
Operating range: Humidity 0-100%RH, Temperature -40~80 Celsius
Accuracy: Humidity +-2%RH(Max +-5%RH), Temperature <+-0.5 Celsius
Resolution or sensitivity: Humidity 0.1%RH, Temperature 0.1 Celsius
Repeatability: Humidity +-1%RH, Temperature +-0.2 Celsius
Humidity hysteresis +-0.3%RH
Long-term Stability: +-0.5%RH/year
Sensing period :Average: 2 sec
Interchangeability: fully interchangeable
Pin sequence number: 1 2 3 4 (from left to right direction). Printed text facing upwards.
You should also place a 10K Ohm resister between Pin 1 (VCC) and Pin 2 (DATA)
Pin Function
1 VDD—-power supply
2 DATA–signal

Click to download DHT22 Data-sheet

Additional information

Weight 0.04 kg