DHT22 Wired (AM2302) Humidity and Temperature Sensor
AM2302 output calibrated digital signal. It applys 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(100m) enable AM2302 to be suited in all kinds of harsh application occasions. Single-row packaged with four pins, making the connection very convenient.
|Power supply||3.3-5.5V DC|
|Output signal||digital signal via 1-wire bus|
|Sensing element||Polymer humidity capacitor|
|Operating range||humidity 0-100%RH; temperature -40~80Celsius|
|Accuracy||humidity +-2%RH(Max +-5%RH); temperature +-0.5Celsius|
|Resolution or sensitivity||humidity 0.1%RH; temperature 0.1Celsius|
|Repeatability||humidity +-1%RH; temperature +-0.2Celsius|