Product Description
The DHT22 (AM2302) is a digital module that measures temperature and humidity with high accuracy and a wide range. It has an onboard sensor that uses a single-wire interface to communicate with the environment. The sensor is a combination of a capacitive humidity sensor and a thermistor, which output a digital signal that does not require analog input pins.
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:
- Ultra-Low Power.
- No Additional Components.
- Long-Distance Signal Transmission.
- All Calibration, Digital Output & Completely Interchangeable.
- Relative Humidity & Temperature Measurement.
- Humidity Measurement Precision: 2-5% RH.
- Temperature Measurement Precision: 0.5 deg C.
Specification:
| Model | AM2302 |
|---|---|
| Recommended Power Supply | 3.3V DC or 5V DC |
| Working Humidity Range | 0-100%RH |
| Operating Temperature (°C): | -40 to 80 |
| Length (mm): | 40 |
| Width (mm) | 15 |
| Height (mm) | 11 |
| Weight (g): | 5 |
| Shipping Weight | 0.012 kg |
| Shipping Dimensions | 7 × 6 × 1 cm |
Package Includes:
1 x Waveshare DHT22 temperature-humidity Sensor
