Product Name: Optical Sensor Switch Sending Light: Infrared Rays Working Voltage: DC 6-36V Working Current:300mA Sensory Distance: 10cm (+/-10%)Output Type: NPN NO(Normally Open)Thread Diameter: 17.6mm/0.69″Body Size: 68.7 x 23.3mm/2.7″ x 0.91” (Max.L*D)Cable Length: 1.1m/ 43.3”External Package Content: 1Pcs x Photoelectric Switch. This Photoelectric Switch is controlled by infrared ray, as an proximity sensor switch, consists of a light emitter and a receiver. Can be applied in security system, manufacturing industry.