DHT22 Temperature and Humidity Sensor Module

Description

The DHT22 Temperature and Humidity Sensor Module is a device used to measure temperature and humidity in a given environment. It is an upgrade to the popular DHT11 sensor, offering improved accuracy and a wider temperature and humidity measurement range.

The DHT22 module uses a capacitive humidity sensing element and a thermistor to measure the relative humidity and temperature in the environment. The module has a single digital output pin that provides both temperature and humidity readings. The data can be easily read by microcontrollers, such as the Arduino, using a simple digital interface.

Features:

• 3.3-6V Input
• 1-1.5mA measuring current
• 40-50 uA standby current
• Humidity from 0-100% RH
• -40 – 80 degrees C temperature range
• +-2% RH accuracy
• +-0.5 degrees C

Tutorials:

Resources:

• Datasheet (DHT22)
• Example Code (Arduino) (Credit to Adafruit)

Recommended Workshops:

• WSQ – Internet of Things (IoT) Management with Raspberry Pi
• WSQ – Internet of Things (IoT) Implementation with Microcontroller
• WSQ – Internet of Things (IoT) Fundamental for Beginners