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DHT22 Digital Temperature and Humidity Sensor module AM2302 module
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DHT22 Digital Temperature and Humidity Sensor module AM2302 module
Product Description:
- Type:AM2302
- Accuracy resolution:0.1
- Humidity range:0-100%RH
- Temperature range:-40~80℃
- Humidity measurement precision:±2%RH
- Temperature measurement precision:±0.5℃
Product Details:
- ultra-low power
- No additional components
- excellent long-term stability
- All calibration, digital output
- completely interchangeable
- long distance signal transmission
- relative humidity and temperature measurement.
Pin Identification and Configuration
|
For DHT22 Sensor |
||
|
1 |
Vcc |
Power supply 3.5V to 5.5V |
|
2 |
Data |
Outputs both Temperature and Humidity through serial Data |
|
3 |
NC |
No Connection and hence not used |
|
4 |
Ground |
Connected to the ground of the circuit |
|
For DHT22 Module |
||
|
1 |
Vcc |
Power supply 3.5V to 5.5V |
|
2 |
Data |
Outputs both Temperature and Humidity through serial Data |
|
3 |
Ground |
Connected to the ground of the circuit |
Where DHT22 Sensor is Used
The DHT22 is a commonly used Temperature and humidity sensor. The sensor comes with a dedicated NTC to measure temperature and an 8-bit microcontroller to output the values of temperature and humidity as serial data. The sensor is also factory calibrated and hence easy to interface with other microcontrollers.
The sensor can measure temperature from -40°C to 80°C and humidity from 0% to 100% with an accuracy of ±1°C and ±1%. So if you are looking to measure in this range then this sensor might be the right choice for you.
How to use DHT22 Sensor
The DHT22 Sensor is factory calibrated and outputs serial data and hence it is highly easy to set it up. The connection diagram for this sensor is shown below.
