DHT22 Digital Temperature and Humidity Sensor Module

The DHT22 Digital Temperature and Humidity Sensor Module is a reliable and cost-effective solution for environmental monitoring in a wide range of embedded and IoT-based applications. It delivers high accuracy readings of ±0.5°C for temperature and ±2% RH for humidity, making it suitable for both hobbyist and professional projects.

This sensor module operates at 3.3V to 6V, with low power consumption, and features a single-wire digital signal interface, which makes it easy to integrate with popular microcontrollers like Arduino, ESP32, Raspberry Pi, STM32, NodeMCU, and more.

The DHT22 can measure temperature from -40°C to +80°C and humidity from 0% to 100% RH, offering great performance in both indoor and outdoor environments. Its sampling rate of 0.5 Hz (1 reading every 2 seconds) allows for frequent and stable updates, suitable for real-time applications.

With its compact design and long-term stability, the DHT22 is widely used in:

• Smart home systems (climate and air quality control)

• Greenhouses and agriculture monitoring

• Weather stations and forecasting setups

• HVAC and industrial control systems

• DIY electronics and robotics projects

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Whether building a smart thermostat, automating an irrigation system, or creating a full home automation solution, the DHT22 sensor module is a must-have for dependable and accurate environmental monitoring.

Features Of DHT22 Capacitive Humidity Sensing Digital Temperature And Humidity Module:

• High precision
• Capacitive type
• Full range temperature compensated
• Relative humidity and temperature measurement
• Calibrated digital signal
• Outstanding long-term stability
• Extra components not needed
• Long transmission distance
• Low power consumption
• 4 pins packaged and fully interchangeable

Specifications Of Digital Temperature and Humidity Meter DHT 22:

1. 🔧 Technical Specifications:

   Parameter	Value
   Power Supply	3.3V to 6V DC
   Output Signal	Digital signal via 1-wire bus
   Max Current	2.5mA during measurement
   Humidity Range	0–100% RH
   Temperature Range	-40°C to +80°C
   Accuracy (Temp)	±0.5°C
   Accuracy (Humidity)	±2% RH
   Sampling Rate	0.5 Hz (every 2 seconds)
   Dimensions	28mm x 12mm x 10mm

Applications:

• Measure temperature and humidity
• Local Weather station
• Automatic climate control
• Environment monitoring

Package Includes:

• 1 x DHT22 Digital Temperature and Humidity Sensor Module