AM2302 DHT22 1-Wire Humidity and Temperature Sensor Arduino

The DHT22 is a popular 8-bit temperature and humidity sensor with digital interface that communicates via a single bus line called 1-wire (aka One-Wire).
This device has a wide range of applications: it can measure temperature from -40 ºC to 125ºC and air humidity from 0% to 100% RH. The system can be operated using a microcontroller or any development kit, eg Arduino UNO R3.

Specification:

Parameters
- Supply voltage: from 3.3 V to 6 V
- Communication: 1-Wire bus
- Average current consumption: 0.2 mA

Temperature
- Measuring range: -40 to 120 ° C
- Resolution: 8-bit (0.1 ° C)
- Accuracy: ± 0.5 ° C
- Response time: average 2 seconds

Humidity
- Measuring range: 0 - 100% RH
- Resolution: 8-bit (± 0.1% RH)
- Accuracy ± 2% RH *
- Response time: average 2 seconds