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DHT22 Temperature & Humidity Sensor With PCB
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DHT22 / AM2302 With PCB
Digital-output relative humidity & temperature sensor/module DHT22 (DHT22 also named as AM2302)
also known as AM2302 is a low cost Humidity and Temperature sensor. It uses a capacitive humidity sensor and a thermistor to
measure the surrounding air, and spits out a digital signal on the data
pin (no analog input pins needed). Its fairly simple to use, but
requires careful timing to grab data.
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 program in OTP memory, when the sensor is detecting, it will cite coefficient from memory.
Small size & low consumption & long transmission distance(20m) enable DHT22 to be suited in all kinds of harsh application occasions.
connect the first pin on the left to 3-5V power, the second pin to your
data input pin and the right most pin to ground. Although it uses a
single-wire to send data it is not Dallas One Wire compatible! If you
want multiple sensors, each one must have its own data pin!
Features of DHT-22 With PCB
Size : 28.2 mm (length) * 13.1 mm (width) * 10 mm (high)
Weight : 6 g
Working voltage : 3 V - 5.5 V
The sensor models : the loose AM2302 temperature and humidity sensor
Signal output form : digital signal
Temperature measurement range : - 40°c to 80°c
Measuring accuracy : 0.5°c
The humidity measuring range : 0-100% RH
Measuring accuracy : 2% RH
Resolution : 16
With fixed screw holes, convenient installation and fixation. Diameter of 2.6 mm
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Humidity & Temperature Sensor