Dht22 Temp/humidity Sensor

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Dht22 Temp/humidity Sensor

Dht22 Temp/humidity Sensor

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Adafruit Accessories DHT22 Temp/Humidity Sensor


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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 . It's 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. We have an Adafruit Learning System guide with schematics, Arduino CircuitPython code, datasheets and more! Compared to the DHT11, this sensor is more precise, more accurate and works in a bigger range of temperature/humidity, but its larger and more expensive.

Comes with a 4.7K 10K resistor, which you will want to use as a pullup from the data pin to VCC.
Dht22 Temp/humidity Sensor
  • Product - Sensors
  • Type - Board Mount Humidity Sensors
  • Brand - Adafruit
  • Manufacturer - Adafruit
  • Product Type - Accessories
  • Standard Pack Qty - 1
  • Subcategory - Supplies