In the present invention, the measurement value is acquired by a measurement sensor for measuring fine dust, temperature, and humidity contained in indoor or outdoor air, and the algorithm between the obtained measurement values is applied to obtain a good air quality, , Poor, and very bad, and displays them in different colors so that the public can visually recognize and judge the air quality of the place, and the state of the measured air quality in the area is determined by the wireless communication method Temperature and humidity measurement sensor that enables the user to immediately recognize the state of the air quality in the remote area by transmitting the signal to an external wireless terminal such as a smart terminal, a mobile phone, a tablet, or a PC An air quality measurement sensor unit including a fine dust sensor for measuring air quality, a temperature sensor and a humidity sensor, And an air quality measuring unit for measuring a state of air quality in the corresponding area based on the measured hybrid discomfort index based on the measured value measured by the air quality measuring sensor unit and displaying the air condition on the LED display unit, An air quality control module including an air quality measurement value reception module, an air quality determination module, an air quality display module, an air quality status communication module, and a main control unit, a wireless communication unit for transmitting the air quality measurement value and the air quality status to an external wireless terminal An air quality measurement sensor unit, an LED display unit, an air quality control unit, and a wireless communication unit.
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