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The DHT11 sensor refers to a devices that can convert temperature and humidity into electrical signals that can be easily measured and processed.
The DHT11 temperature and humidity sensor contain a temperature and humidity composite sensor that has calibrated the digital signal output. It uses special digital module acquisition technology and temperature and humidity sensing technology, which can accurately detect the current temperature and humidity.
Connect the module to the A0 interface of the UNO main control board, download the test program to the main control board, place the module in the air environment, and detect the temperature and humidity of the current environment.