This is a calibrated digital temperature and humidity module with onboard sensor DHT22 (AM2302), which features higher accuracy and a wider measuring range than DHT11. It can be used for detecting ambient temperature and humidity, through the standard single-wire interface.DHT22 Digital Temperature & Humidity Sensor is a 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).

Note: Simply connect the first pin on the left to 3-5V power, the second pin to your data input pin, and the rightmost pin to the 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:

1. Ultra-Low Power.
2. No Additional Components.
3. Long-Distance Signal Transmission.
4. All Calibration, Digital Output & Completely Interchangeable.
5. Relative Humidity & Temperature Measurement.
6. Humidity Measurement Precision: 2-5% RH.
7. Temperature Measurement Precision: 0.5 deg C.

Package Includes:

1 x Waveshare DHT22 temperature-humidity Sensor

Specifications :-

Model	AM2302
Recommended Power Supply	3.3V DC or 5V DC
Working Humidity Range	0-100%RH
Working Temperature Range (C)	-40 to 80
Length (mm)	40
Width (mm)	15
Height (mm)	11
Weight (gm)	5
Shipment Weight	0.012 kg
Shipment Dimensions	7 6 1 cm