D105: Connecting the temperature and humidity sensor DHT22

Temperature and humidity sensor DHT22

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To the universal meter smart-MAC D105 can be connected one temperature and humidity sensor DHT22 or five DS18b20 temperature sensors.

DHT22 is a digital 1-wire temperature and humidity sensor.

Connection scheme:

  • Contact 1 sensor connects to terminal 6: 5B
  • Contact 2 sensors connect to terminal 4: Data 1-Wire
  • Contact 3 sensor is not used
  • Contact 4 sensors connect to terminal 1: GND (Earth or -5B)

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DHT22 sensor connection scheme to smart-MAC D105

Once you're connecting the sensor, open the device settings, the Counter config section, and select the appropriate type of "DHT22 Temperature and Humidity" sensor and click Save.

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DhT22 temperature and humidity sensor selection interface.

Sensor data will be stored in the next parameters:

  • T1 - the temperature in °C
  • T2 - relative humidity of 0 .. 100% RH

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