AM2301 DHT21 Temperature & Humidity Sensor - Capacitive Digital.Each AM2301/ DHT21 sensor is calibrated in an extremely accurate humidity calibration chamber. 

 It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure high reliability and excellent long-term stability. Electrical sensor comprises a capacitance -type sensing the wet element, and a NTC for the temperature measuring element, and with a phase high-performance 8-bit microcontroller is connected. Therefore, the product has the advantages of excellent quality, ultra-fast response, strong anti-interference ability and high cost performance. Ultra-small size, extremely low power consumption, and signal transmission distances of up to 20 meters make it the best choice for even the most demanding applications.

Features

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

Specifications

Power: DC 3.3-5.2V

HUMI: 0~99.9% RH

TEMP: -20 ~ 60℃

Precision: ±3% RH, ±0.5 ℃

Output: Digital (1 wire)

Dimension: 60 x 27 x 14mm(L x W x H)