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PM2.5 - PM10 - High Precision Air Particulate Matter Sensor - SDS011
The SDS011 using principle of laser scattering,can get the particle concentration between 0.3 to 10μm in the air. It gives direct digital output via serial protocol at 9600bps and also over 2 PWM channels. There is a built-in fan for stable and reliable operations.
Technical datasheet [PDF]