Precision Digital Temperature & Humidity Sensor Module (DHT22)

Overview

The DHT22 is a high-precision digital temperature and humidity sensor that provides accurate and reliable environmental readings. It is a significant upgrade over its predecessor, the DHT11, offering a wider measurement range and higher accuracy. This sensor is essential for any project requiring precise climate monitoring, from weather stations to smart home systems.

Key Features

• High Accuracy: ±0.5°C for temperature and ±2% RH for humidity, ensuring dependable data.
• Wide Measurement Range: Measures temperatures from -40°C to 80°C and humidity from 0% to 100% RH.
• Digital Output: Single-wire digital interface simplifies wiring and reduces pin usage.
• Low Power Consumption: Operates on 3-5V DC, making it suitable for battery-powered projects.
• Long-Term Stability: Built to deliver consistent performance over extended periods.

Technical Specifications

• Model: DHT22 (AM2302)
• Power Supply: 3 to 5V DC
• Temperature Range: -40°C to 80°C
• Temperature Accuracy: ±0.5°C
• Humidity Range: 0% to 100% RH
• Humidity Accuracy: ±2% RH
• Sampling Rate: 0.5 Hz (once every 2 seconds)
• Interface: Single-wire digital

Applications & Use Cases

• Weather Stations: Monitor outdoor temperature and humidity for accurate forecasts.
• Environmental Monitoring: Track climate conditions in greenhouses, museums, or server rooms.
• Smart Home Automation: Integrate with home automation systems to control HVAC, humidifiers, or dehumidifiers.
• Data Logging: Record environmental data for research, agriculture, or industrial applications.
• DIY Projects: Perfect for hobbyists and makers building climate-related gadgets.

What's Included

• 1x DHT22 Temperature & Humidity Sensor Module
• 1x Pin header (pre-soldered on some versions, check product images)

Compatibility

Compatible with Arduino, Raspberry Pi, ESP32, ESP8266, STM32, and most other microcontrollers. Works with popular libraries such as Adafruit DHT and DHT sensor library.

MOKWN Recommendation

For Egyptian makers, students, and engineers, the DHT22 is the go-to sensor for any project that demands accuracy and reliability. Whether you're building a weather station for your balcony or an automated greenhouse for your farm, this sensor delivers professional-grade data. We recommend pairing it with a breadboard and jumper wires for prototyping, or with a waterproof probe for outdoor use.