Overview

DHT22 is a high performance temperature and humidity sensor capable of long distance signal transmission.

The product is inexpensive, small and handy and has high reliability and excellent stability. It has temperature measuring sensor and the relative humidity is measured using a capacitive moisture sensor. Those sensing elements are pre-calibrated and the output is provided as a digital signal.

Specifications

• Supply Voltage: 3.3 to 5.5 V
• Humidity sensing range: 0 – 100% RH
• Humidity measurement accuracy: ±2% RH
• Temperature measurement range: -40 to +80 °C
• Temperature measurement accuracy: ±0.5 °C
• Size: 28 mm  x 12 mm x 10 mm