AM2301 Digital Temperature and Humidity Sensor module ( DHT21 )


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4 Items

5,50 € tax incl.

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Product Overview

AM2301 capacitive humidity sensing digital temperature and humidity module is the one that contains the compound has been calibrated digital signal output of the temperature and humidity sensor. Application of a dedicated digital modules collection technology and the temperature and humidity sensing technology, to ensure that the product has high reliability and excellent long-term stability. The sensor includes a capacitive sensor wet components and a high-precision temperature measurement devices, and connected with a high-performance 8-bit microcontroller. The product has excellent quality, fast response, strong anti-jamming capability, and high cost. Each sensor is extremely accurate humidity calibration chamber calibration. The form of procedures, the calibration coefficients stored in the microcontroller, the sensor within the processing of the heartbeat to call these calibration coefficients. Standard single-bus interface, system integration quick and easy. Small size, low power consumption, signal transmission distance up to 20 meters, making it the best choice of all kinds of applications and even the most demanding applications. Products for the 3-lead (single-bus interface) connection convenience. Special packages according to user needs.




Datasheet is available at this LINK

AM2301 Pin assignments

  • 1 Red : VDD Power (3.3V-5.2V)
  • 2 Yellow : SDA Serial data,Dual-port
  • 3 Black : GND Ground


Power supply pins(VDD GND)


AM2301 supply voltage range 3.3V - 5.2V, recommended supply voltage is 5V.


Serial data(SDA)


SDA pin is tri structure for reading, writing sensor data.
Specific communication timing, see the detailed description of the communication protocol.

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AM2301 Digital Temperature and Humidity Sensor module ( DHT21 )