The RHT03 (also known by 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.

Features:

- 3.3-6V Input

- 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

Links:

Datasheet

Example Code

GitHub