Thermistor-based temperature measurement: Provides precise temperature readings for reliable monitoring
Capacitive humidity sensing: Enables accurate humidity detection for environmental control
Single-wire digital interface: Simplifies integration with microcontrollers and other digital systems
Wide operating voltage range (3.3 to 6V): Compatible with various microcontroller platforms
Compact size (15.3 mm length): Fits easily into small electronic projects
Summarized by Shop
The DHT22 temperature and humidity sensor uses a thermistor to measure temperature and capacitive humidity sensor to measure humidity. It has a single wire digital interface.
Specifications
Supply Voltage: 3.3 to 6V
Output Signal: digital signal via single-bus
Operating Range and Accuracy (Humidity): 0-100% RH; +/-2% RH