DHT22 Temperature and Humidity Sensor

INTRODUCTION

DHT22 capacitive humidity sensing digital temperature and humidity module is one that contains the compound has been calibrated digital signal output of the temperature and humidity sensors. Application of a dedicated digital modules collection technology and the temperature and humidity sensing technology, to ensure that the product has high reliability and excellent long-term stability.

The sensor includes a capacitive sensor wet components and a high-precision temperature measurement devices, and connected with a high-performance 8-bit microcontroller. The product has 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.

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 special sensor Arduino expansion board,it will be easily implemented the interactive effect which related to the temperature and humidity perception.

attention: DHT22 digital temperature and humidity sensor is designed for analog sensor interfaces.The analog port will be used as the digital which will not occupy the original digital port of the Arduino.The lines of the sensor which can transform the analog function to digital that can be use on digital port.

DHT22 temperature sensor tutorial:

• ESP32 Arduino: Getting temperature from a DHT22 sensor
• ESP32 Arduino: DHT22 Minimum Sampling Period
• ESP32 Arduino: Getting humidity measurements from a DHT22 sensor
• ESP8266 Arduino Tutorial: Getting temperature and humidity with a DHT22 sensor

Project 1: Environmental Monitoring System Based on OBLOQ-IoT Module 
This product is mainly applied in electronic laboratory to monitor and control indicators such as temperature, humidity, light and dust, and timely upload them to the cloud data space to achieve remote monitoring and control of dehumidifier, air purifier, exhaust fan and dimmable light, etc. in the laboratory.     

Hardware List: 

DFRduino UNO R3 - Arduino Compatible 
Gravity: UART OBLOQ – IOT Module (Microsoft Azure) 
DHT22 Temperature and Humidity Sensor 
Sharp GP2Y1010AU0F Compact optical Dust Sensor 
Gravity: i2C BMP280 Barometer Sensor 
Gravity: Analog Ambient Light Sensor For Arduino 
LCD12864 Shield for Arduino 
Quadruple relay module 

SPECIFICATION

• Supply Voltage: 5V
• Temperature Range:-40-80? / resolution0.1? / error <±0.5?
• Humidity Range: 0-100%RH /  resolution0.1%RH / error±2%RH
• Wiring map: VCC,GND,S 
• Size: 38 x 20mm(1.50x0.79")

SHIPPING LIST

• DHT22 sensor   x1
• Analog sensor cable   x1