The AM2301A or also known as DHT21 digital temperature sensor is one of the common from the range of DHT Temperature & Humidity sensors and boasts a relatively high temperature measurement accuracy of ±0.3℃ better compared to the DHT11 or DHT22 and with a relative humidity accuracy of +/- 3%. It has only 3 wires, including power and ground, meaning only one digital pin is required to interface it to a microcontroller. For Arduino development platforms the sensor is very well supported by the DHT library available from the Arduino Playground website.
Module Aspects:
- Accurate,durable and high quality
- 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
Technical Specifications:
- Power: 3.3-5.2V DC
- HUMI: 0~99.9% RH
- TEMP: -40 ~ 80℃
- Precision: ±3% RH, ±0.5 ℃
- Output: Digital (1 wire)
- Dimension: 60 x 27 x 14mm(L*W*H)
Package Includes:
- 1 x DHT21 / AM2301 Capacitive Digital Temperature And Humidity Sensor Module