DHT22 Sensor Module AM2302

Product overview

The DHT22, also known as the AM2302, is a popular digital temperature and humidity sensor module. It is part of the DHT series of sensors, which also includes the DHT11. The DHT22 provides more accurate and higher-resolution measurements compared to the DHT11.

Here's an overview of the DHT22/AM2302 sensor module:

Key Features :

 Measurement Range : The DHT22 can measure temperature in the range of -40°C to 80°C with a resolution of 0.1°C. It can measure humidity in the range of 0% to 100% with a resolution of 0.1%.

 Accuracy : The sensor has good accuracy for many applications. Temperature accuracy is typically ±0.5°C, and humidity accuracy is around ±2%.

 Digital Output : The DHT22 provides a digital output, making it easy to interface with microcontrollers such as Arduino.

 Communication Protocol : It communicates over a single wire using a proprietary protocol. Libraries are available for various platforms, simplifying integration into projects.

 Power Supply : The sensor usually operates on a voltage of 3.3V to 5V.

 Response Time : The DHT22 has a relatively quick response time, providing temperature and humidity readings approximately every 2 seconds.

Wiring:

Connect the sensor to your Arduino as follows:

Technical specifications

What's included

• 1 x DHT22 Sensor Module.