DHT22 Humidity and Temperature Sensor Module (AM2302)

The DHT22 (AM2302) is a professional-grade digital temperature and humidity sensor that provides highly accurate environmental data for a wide range of monitoring and automation applications. Compared to the popular DHT11 sensor, the DHT22 offers significantly higher accuracy, a wider measurement range, and better long-term stability.

The sensor contains a calibrated digital signal output, eliminating the need for analog-to-digital conversion and simplifying integration with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other development platforms.

Whether you're building a weather station, smart agriculture system, industrial monitoring solution, or IoT-based environmental monitoring project, the DHT22 delivers dependable and precise measurements.

Key Features
High-accuracy temperature and humidity measurement
Factory-calibrated digital output
Wide operating temperature range
Excellent long-term stability
Low power consumption
Single-wire digital communication interface
Fast response time
Reliable environmental monitoring
Easy integration with microcontrollers
Suitable for indoor and outdoor monitoring systems
Technical Specifications
Sensor Model: DHT22 (AM2302)
Operating Voltage: 3.3V – 6V DC
Temperature Range: -40°C to +80°C
Temperature Accuracy: ±0.5°C
Humidity Range: 0% to 100% RH
Humidity Accuracy: ±2% to ±5% RH
Output Signal: Digital
Sampling Rate: 0.5Hz (One reading every 2 seconds)
Communication Protocol: Single Wire Serial Interface
Low Power Consumption
Factory Calibrated
Applications
Weather Stations

Monitor real-time temperature and humidity conditions accurately.

Smart Home Automation

Control fans, air conditioners, humidifiers, and ventilation systems automatically.

Greenhouse Monitoring

Maintain ideal environmental conditions for plants and crops.

IoT Environmental Monitoring

Send live sensor data to cloud platforms using ESP32 and ESP8266.

Industrial Monitoring

Monitor temperature and humidity in warehouses, factories, and production facilities.

Agriculture Projects

Track environmental conditions for improved crop management.

Educational Projects

Ideal for learning sensor interfacing and environmental data collection.

Pin Configuration
VCC – Power Supply (3.3V to 6V)
DATA – Digital Output
NC – Not Connected
GND – Ground
Package Includes
1 × DHT22 (AM2302) Temperature and Humidity Sensor Module
Why Choose the DHT22 (AM2302)?

The DHT22 is one of the most trusted temperature and humidity sensors for professional and hobbyist applications. Its superior accuracy, wider measurement range, and stable digital output make it an excellent upgrade over basic sensors.

Whether you are creating a weather station, greenhouse controller, smart building system, industrial monitoring solution, or IoT dashboard, the DHT22 provides precise environmental measurements that help ensure reliable project performance.

Upgrade your environmental monitoring projects with the accuracy and reliability of the DHT22 Humidity and Temperature Sensor Module.