DHT22 - Temperature & Humidity Sensor Module

DHT22 - Temperature and Humidity Sensor Module

The DHT22 Temperature & Humidity Sensor Module is a high-accuracy digital sensor designed to measure ambient temperature and relative humidity. It combines a capacitive humidity sensing element and a thermistor with a built-in microcontroller, providing calibrated digital output for reliable environmental monitoring. The module is widely used in weather stations, home automation systems, HVAC controls, agricultural monitoring, and IoT projects.

Specifications:

• Operating Voltage: 3.3V – 6V DC
• Temperature Range: -40°C to +80°C
• Temperature Accuracy: ±0.5°C
• Humidity Range: 0% to 100% RH
• Humidity Accuracy: ±2% to ±5% RH
• Output Signal: Digital Single-Wire Interface

Pin Configuration

1. VCC – Power Supply (3.3V–6V)
2. DATA – Digital Data Output
3. NC – Not Connected
4. GND – Ground