DHT21/AM2301 Capacitive Digital Temperature and Humidity Sensor

Product Description

• DHT21 is the former name, new name is AM2301
• 4-pin package
• Ultra-low power
• No additional components
• Excellent long-term stability
• All calibration, digital output
• Completely interchangeable
• Long distance signal transmission
• Relative humidity and temperature measurement

• Type: AM2301
• Accuracy resolution: 0.1
• Measurement range: 0-100%RH
• Temperature measurement range: -40℃ ~ +80℃
• Humidity measurement precision: ±3%RH
• Temperature measurement precision: ±0.5℃

Data Sheet

http://meteobox.tk/files/AM2301.pdf

http://www.instructables.com/id/Hacking-the-AM2301-Temperature-And-Humidity-Sensor/?ALLSTEPS

Library & Examples

https://github.com/adafruit/DHT-sensor-library

http://azharduino.blogspot.com/2013/04/arduino-with-dht-21-am-2301.html