The DHT22 is a accurate digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and outputs a digital signal on the data pin (no analog input pins needed). Its fairly simple to use sensor which can deliver new data once every 2 seconds.

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.

Technical Details

  • 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 80°C temperature readings ±0.5°C 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
  • Weight: 2.4g

 

DHT22 Digital Temperature & Humidity Sensor

 

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DHT22 Digital Temperature & Humidity Sensor

Temperature & Humidity
  • Product Code: DHT22 Digital Temperature/Humidity Sensor
  • Availability: Out Of Stock
  • $5.00 USD


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Tags: temperature, humidity, dht22, sht11, sht15, arduino