DHT22 Temperature and Humidity Sensor Module

The DHT22 (AM2302) is a high-precision digital temperature and humidity sensor. It provides calibrated digital output and works with Arduino, ESP32, ESP8266, Raspberry Pi, and other microcontrollers. Compared to DHT11, it has wider range and better accuracy, making it suitable for more demanding applications.

🔹 Key Features

• Measures temperature and relative humidity

• Digital single-wire communication

• Wide temperature range: -40°C to 80°C

• Humidity range: 0% to 100% RH

• High accuracy: ±0.5°C (temperature), ±2% RH (humidity)

• Compatible with Arduino libraries for easy integration

🔹 Applications

• Weather monitoring systems

• Smart home automation

• Greenhouse or plant monitoring

• IoT environmental sensing

• DIY electronics and educational projects