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OPEN-SMART PM2.5 Serial Optical Dust Smoke Sensor Module for Arduino
It is a dust sensor by optical sensing system. An infrared emitting diode (IRED) and an phototran- sistor are diagonally arranged into this device. It detects the reflected light of dust in air. Especially£¬ it is effective to detect very fine particle like the cigarette smoke. In addition it can distinguish smoke from house dust by pulse pattern of output voltage. - Working voltage: 4.8-5.5VDC - Operating current: </= 20 mA - Output mode: serial TTL output - Application: Air purifier£¬ Air conditioner£¬ Air monitor