DHT22 also named AM2302.
It is capable of detecting temperature and humidity.
It is easily used with an Arduino compatible micro-controller when paired with a DHT22 library.
The sensor should be sampled at intervals of 2 seconds or more.
Voltage: 3.3v – 5.5v max
Operating humidity range: 0-100% RH
Operating temperature range: -40C – 80C
Temperature accuracy: <+-0.5C Temperature resolution: 0.1C Humidity accuracy: +-2%RH (+-5%RH) Humidity resolution: 0.1%RH Package Include: 1 x DHT22 sensor