DHT22 Digital Temperature and Humidity Sensor-Standard Quality
The DHT22 Digital Temperature and Humidity Sensor – [Standard Quality] 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. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old.
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 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
Relative humidity and temperature measurement
Calibrated digital signal
Outstanding long-term stability
Extra components not needed
Long transmission distance
Low power consumption
4 pins packaged and fully interchangeable
Specifications:
| Operating range | humidity 0-100%RH |
|---|---|
| Accuracy | humidity ±2%RH (Max ±5%RH) |
| Humidity Measurement Precision | ±2-5% RH |
| Length (mm): | 33 |
| Width (mm): | 15.5 |
| Height (mm): | 8 |
| Weight (g): | 3 |
Applications
Measure temperature and humidity
Local Weather station
Automatic climate control
Environment monitoring
Package Includes
1 x DHT22 Digital Temperature and Humidity Sensor – Standard Quality
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