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DHT22 Temperature / Humidity Sensor

$11.95

DHT22 Temperature / Humidity Sensor

$11.95

SKU: SEN-003 - Mfg Part Number: DHT22

Description

The DHT22 is a basic digital temperature and humidity sensor. The sensor uses the same internals as the AM2302, but sits in a much more compact, breadboard friendly package. 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 sensor is accurate to +/- 0.5°C and +/- 2% relative humidity. This version is breadboard compatible and works well with the Arduino, Raspberry Pi, and just about anything else with a digital I/O pin available.

We do recommend a 5.1K Ohm pull up resistor between the power and output line on this sensor to ensure nice, stable communication.


Features

  • Temperature Accuracy: +/- 0.5°C
  • Temperature Range: -40 – 80°C
  • Temperature Resolution: 0.1°C
  • Max Current: 2.5mA
  • Voltage: 3 – 5VDC
  • Relative Humidity Accuracy: +/- 2%
  • Relative Humidity Resolution: 0.1%
  • Sample Rate: 0.5Hz (once every 2 seconds)
  • Size: 15.3 x 26 x 7.7mm / 0.6 x 1 x 0.3″
  • Breadboard friendly


Resources


In stock (can be backordered)

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