SM -PWMPWMPWM-01A
SM-PWM-01A is a dust sensor that detects the dust particle concentration in air by using optical
sensing method. An infrared light emitting diode (IR LED) and a photo-sensor are optically
arranged in this device. The photo-sensor detects the reflected IR LED light by dust particles in
air. This dust sensor can detect the small particle like cigarette smoke and it can distinguish small
particles like smoke from large house dust by pulse pattern of signal output.
■ Features
Compact size, light weight (W59x H45x D20 mm, ~ 35g)
PWM (pulse width modulation) output (Low pulse output)
Enable to distinguish small particle of cigarette smoke from large particle of house dust
The Low pulse width is proportion to particle size and concentration.
Constant forced air convection flow by heater resister in dust senso