The Optical Dust Sensor (GP2Y1010AU0F) is particularly effective at detecting particles, such as smoke, and is commonly used in air purifier systems. This device features an infrared light-emitting diode and a p o istor, arranged diagonally, to detect light reflected by dust particles in the air. The sensor has extremely low current consumption (20mA maximum, 11mA typical) and can operate with up to 7VDC. The output is an analog voltage proportional to the measured dust concentration, with a sensitivity of 0.5V/0.1mg/m. Power Supply Voltage: 5-7V Current Consumption: 20mA maximum Minimum Particle Detection: 0.8m Sensitivity: 0.5V/(0.1mg/m) Voltage in : 0.9V typical Operating Temperature: -10C-65C Storage Temperature: -20C-80C Service Life: 5 years Color: Silver Material: ABS Package Contents: 1 set x Dust Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.