DHT22/AM2302 Digital Temperature Humidity Sensor SHT11 SHT15 RHT03 Arduino PIC

Description:

The DHT22 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 right most 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!

Low cost
3 to 5V 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 80C temperature readings 0.5C 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″)
4 pins, 0.1″ spacing

Applications:

HVAC
Testing and inspection equipment
Automotive
Data logger
Consumer goods
Automatic control
Weather station
Home appliances
Humidity regulator
Medical
Dehumidifier

Packing Included:

1 x DHT22 Sensor