DHT22 Wired (AM2302) Humidity and Temperature Sensor

Description of product

Overview

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.

Specification 

Model

AM2302

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

Humidity hysteresis

+-0.3%RH

Long-term Stability

+-0.5%RH/year

Interchangeability

fully interchangeable