DHT22 AM2302 Temperature and Humidity Sensor Module for Arduino and ESP32

DHT22 AM2302 Temperature and Humidity Sensor

The DHT22 AM2302 Temperature and Humidity Sensor is a reliable solution for precise measurements of environmental parameters. The module is fully compatible with popular platforms—ideal for Arduino, Raspberry Pi, ESP8266, and ESP32.

It offers a very wide temperature measurement range from -40°C to 125°C with a high accuracy of +/- 0.2°C. Humidity is measured across the full range of 0–100% RH with an accuracy of ±5% RH. The module features a compact size, low power consumption, and the ability to transmit data via a wired connection over distances of up to 20 meters.

Key Technical Features

• Temperature measurement range: -40°C to 125°C
• Temperature measurement accuracy: ±0.2°C
• Humidity measurement range: 0–100% RH
• Humidity measurement accuracy: ±5% RH
• Humidity measurement resolution: 8 bits (0.1% RH)
• Supply voltage: 3.3V – 6V
• Current consumption (standby): up to 60 μA
• Current consumption (measurement): maximum 1.6 mA
• Measurement time: 2 s
• Dimensions: 26 x 16 x 7 mm

Benefits of choosing the DHT22

• High precision: Guarantees accurate and repeatable temperature and humidity measurements.
• Wide compatibility: Seamless integration with popular microcontroller systems.
• Long-range transmission: Capable of transmitting data over distances of up to 20 meters without signal degradation.
• Energy efficiency: Very low current consumption in standby mode, which is crucial for battery-powered projects.
• Compact size: Easy to install and conceal the sensor, even in projects with very limited space.

Example Applications

• Weather stations: Building home weather monitoring systems.
• Smart Home Systems: Integration with a smart building to control heating, ventilation, and air conditioning.
• Greenhouses and terrariums: Precise maintenance of the appropriate microclimate for demanding plants and animals.
• Warehouses and server rooms: Monitoring key parameters in locations requiring stable temperature and humidity.
• Educational Projects: Learning programming and electronics using platforms such as Arduino or Raspberry Pi.