AM2302 (wired DHT22) temperature and humidity senso

The AM2302 (wired DHT22) temperature and humidity sensor offers precise and reliable measurement of air temperature and humidity thanks to its simple digital interface. Powered between 3.3V and 6V, it works perfectly with Arduino, Raspberry Pi, and most microcontrollers.

Main features:

Temperature range: -40°C to +80°C

Humidity range: 0% to 100% RH

Accuracy: ±0.5°C for temperature, ±2% RH for humidity

Resolution: 0.1°C and 0.1% RH

Power supply: 3.3 – 6 V DC

Current consumption: <2.5mA during measurement

Output: digital signal on a single wire bus (easy to read with a microcontroller)

Dimensions: about 25 x 15 x 9 mm (may vary by supplier)

Sampling rate: new value available every two seconds

Application domains:

This sensor is widely used in:

Home automation and indoor climate control systems,

The Internet of Things (IoT),

Egg incubators,

Industrial or agricultural environment monitoring (greenhouses, laboratories, etc.),

Creation of personal or educational weather stations,

Monitoring of sensitive buildings (museums, data centers, etc.).

Example projects using the AM2302:

Connected weather station (with LCD or online display)

Automatic regulation of heating or air conditioning

Control of an incubator with constant temperature and humidity

Monitoring systems for smart greenhouses