The MMD206 dust sensor module uses the optical scattering Technology to detect the concentration of dust in the air. The sensor has a built-in infrared light emitting diode and a highly sensitive photoelectric sensor. The light emitted by the light-emitting diode will produce reflected light when it encounters dust. The photoelectric sensor reflects the concentration of dust in the air by detecting the intensity of the reflected light. The sensor outputs a PWM signal; it can also output the dust concentration value through the IIC serial port signal, and the unit is μg/m3. This sensor is suitable for air purifiers, air conditioners with purification functions, fresh air systems and air quality detection instruments.
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