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DHT21 / AM2301 1-Wire Temperature / Humidity Sensor in Case
[1790][IOT-DHT21C]

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AM2301 / DHT21 Temperature/Humidity Sensor

AM2301 output calibrated digital signal. It utilizes exclusive digital-signal-collecting-technique and humidity sensing technology, assuring its reliability and stability.Its sensing elements is connected with 8-bit single-chip computer. Every sensor of this model is temperature compensated and calibrated in accurate calibration chamber and the calibration-coefficient is saved in type of programme in OTP memory, when the sensor is detecting, it will cite coefficient from memory. Small size & low consumption & long transmission distance(20m) enable DHT21 to be suited in all kinds of harsh application occasions.

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Datasheet

Specifications
Sensor	AM2301 / DHT21
Power supply	3-5.5V DC
Output	Digital (1 Wire)
Sensing element	Polymer resistor
Temp range	-40 ~ +80 *C
Temp precission	±0.5
Humidity precission	±3% RH
Sensing period	Average: 2s
Dimensions	592713mm

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