DHT22

DHT22 High-Precision Temperature and Humidity Sensor

The DHT22 (AM2302) is a superior digital environmental sensor offering higher precision, wider measuring ranges, and better long-term stability than its DHT11 counterpart. It utilizes a capacitive humidity sensor and a thermistor to measure surrounding air, outputting a highly reliable digital signal without requiring analog-to-digital conversion.

• Temperature Range: -40°C to 80°C (±0.5°C accuracy)
• Humidity Range: 0-100% RH (±2-5% accuracy)
• Polling Rate: Up to 0.5Hz (Once every 2 seconds)
• Common Use Case: Precision weather stations, laboratory climate monitoring, and automated greenhouse ventilation.