DHT22 Humidity and Temperature Sensor Module (AM2302)

The DHT22 (AM2302) is a digital sensor designed to measure ambient temperature and relative humidity. It combines a capacitive humidity sensing element with a thermistor to provide calibrated digital readings through a single data pin.

With its wide measurement range and good accuracy, the DHT22 is suitable for environmental monitoring, IoT applications, weather stations, automation systems, and electronics projects.

Key Features

• Temperature Measurement: Measures temperatures from −40°C to +80°C.
• Humidity Measurement: Measures relative humidity from 0% to 99.9% RH.
• High Accuracy: Temperature accuracy of approximately ±0.5°C and humidity accuracy of ±2% RH.
• Digital Output: Sends readings through a single data pin.
• Calibrated Sensor: Provides calibrated digital measurements.
• Low Power Consumption: Suitable for embedded and monitoring applications.
• Long-Term Stability: Designed for reliable environmental measurements.
• Microcontroller Compatibility: Can be used with compatible Arduino, ESP32, ESP8266, and other microcontroller projects.

Applications

• Weather monitoring stations
• IoT environmental monitoring
• Home automation systems
• HVAC and humidity control
• Temperature and humidity data loggers
• Greenhouse monitoring
• Consumer electronics
• Educational electronics and robotics projects

Technical Specifications

Package Includes

• 1 × DHT22 Humidity and Temperature Sensor Module (AM2302)

Note: The DHT22 is designed for periodic readings, not high-speed continuous sampling. Check the actual module pinout and operating-voltage requirements before connecting it to your controller.