AM2302 Sensor Module

AM2302 Temperature and Humidity Sensor Module (wired DHT22 Sensor)

The AM2302 is a wired version of the DHT22, in a large plastic body. It is a basic, low-cost digital temperature and humidity 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. 

AM2302 output is a 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 program in OTP memory, when the sensor is detecting, it will cite coefficient from memory. Small size & low consumption & long transmission distance (100m) enable AM2302 Temperature and Humidity Sensor Module to be suited in all kinds of harsh application occasions. Single-row packaged with four pins, making the connection very convenient.

There is a 5.1K resistor inside the sensor connecting VCC and DATA so you do not need any additional pullup resistors.

We have Various sizes of Sensor Modules. Check out our complete collection of Sensor Modules

Specifications of AM2302 Module

• Low cost

• 3 to 5 Volt power and I/O

• 2.5mA max current use during conversion (while requesting data)

• Good for 0-100% humidity readings with 2-5% accuracy

• Good for -40 to 80°C temperature readings ±0.5°C accuracy

• No more than 0.5 Hz sampling rate (once every 2 seconds)

• Body size 27mm x 59mm x 13.5mm (1.05" x 2.32" x 0.53")

• 3 wires 23cm long (9")

• 27mm wide x 58.75mm tall x 13.30mm deep

Related Links

• Datasheet of AM2302 Humidity And Temperature sensor 

• Wiring DHT Humidity Sensor

• How to hookup AM2302 Sensor to Arduino