High Precision Digital Temperature and Humidity Sensor (DHT22)



  • Supply voltage: 5V
  • Temperature range:-40-80℃
  • Humidity range:0-100%RH
  • No. of Pins: 3
  • Size: 38 x 20mm

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DHT22 output is a calibrated digital signal. It utilizes exclusive digital signal collecting techniques and humidity sensing technology, assuring its reliability and stability. The sensor includes a capacitive sensor wet components and a high-precision temperature measurement device and connected with a high-performance 8-bit microcontroller. The product has the excellent quality, fast response, strong anti-jamming capability, and high cost.

Standard single-bus interface, system integration quick and easy. Small size, low power consumption, signal transmission distance up to 20 meters, making it the best choice of all kinds of applications and even the most demanding applications.

DHT22 has higher precision and can replace the expensive imported SHT10 temperature and humidity sensor.

Pin Description:-

Pin 1:     Vcc (5V Max )

Pin 2:     Digital I/O interface connected to the microcontroller

Pin 3:     Ground or –Ve


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