DHT22 AM2302 Temperature and Humidity sensor
The DHT-22 is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn't require extra components so you can get right to measuring relative humidity and temperature.
1-1.5mA measuring current
40-50 uA standby current
Humidity from 0-100% RH
-40 - 80 degrees C temperature range
+-2% RH accuracy
+-0.5 degrees C