Feature:
DHT22 digital temperature and humidity sensor is a calibrated digital signal output temperature and humidity combined sensor, which application-specific modules capture technology and digital temperature and humidity sensor technology to ensure that products with high reliability and excellent long-term stability.
No pullup resistor needed. Just plug right in to Arduino or ESP8266.

Description:
Main Chip:AM2302
Temperature range: -40 to 80 degree celsius
Temperature measurement accuracy: +/- 0.5℃ degree celsius
Humidity measuring range: 0~100%RH
Humidity measurement accuracy: ±2%RH
Ultra-low power consumption
No additional components
Excellent long-term stability
Single-bus digital signal output, bidirectional serial data
Completely interchangeable
Long distance signal transmission
Size: 28 x 12 x 10 mm (L / W / H)
Screw hole diameter: 2.6mm
Weight: 4g

Package included:
2* DHT22/AM2302 Digital Temperature Humidity Sensor Module
2* DuPont wire