DHT22 Digital Temperature And Humidity Sensor Module

DHT22 capacitive humidity sensing digital temperature and humidity module is one that contains the compound that has been calibrated digital signal output of the temperature and humidity sensors. Application of dedicated digital module collection technology and temperature and humidity sensing technology, to ensure that the product has high reliability and excellent long-term stability.
The sensor includes capacitive sensor wet components and high-precision temperature measurement devices and is 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, and signal transmission distance of up to 20 meters make it the best choice for 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. It can measure the environment temperature and humidity to meet the high demand. The product has high reliability and good stability. If it’s used and combined with a special sensor Arduino expansion board, it will be easily implemented the interactive effect related to the temperature and humidity perception.

Specification:

• Main Chip: AM2302
• Operating Voltage: 5V
• Temperature Range: -40 to 80℃
• Temperature Measurement Accuracy: +/- 0.5℃
• Humidity Measuring Range: 0~100%RH
• Humidity Measurement Accuracy: ±2%RH

Features:

• Ultra-low Power Consumption
• No additional Components
• Excellent long-term stability
• Single-bus digital signal output, bidirectional serial data
• Completely interchangeable
• Long-distance signal transmission

Pin Description:

• Pin 1: Power +Ve (5V Max wrt. GND)
• Pin 2: Digital I/O interface connected to the microcontroller
• Pin 3: Power Ground or Power –Ve