Specifications:Product Name Photoelectric Switch w Reflector Sending Light Infrared RaysModel E18-R2P1Type PNP NO DC 3 Wire Retroreflective TypeVoltage DC 10-30VCurrent 200mASensory Distance 2mHead Diameter 1.6cm/0.6"Body Size 2.4 x 7.5cm/0.9" x 3" (Max.D*L)Reflector Panel Size 6.5 x 4 x 0.8cm/2.6'' x 1.6'' x 0.3'' (L*W*T)Material PlasticColor Yellow, BlackCable Length 120cm/47"Weight 70gPackage Content 1 x Photoelectric Switch 1 x Reflector PanelDescription:A retroreflective arrangement places the transmitter and receiver at the same location and uses a reflector to bounce the light beam back from the transmitter to the receiver. An object is sensed when the beam is interrupted and fails to the receiver.Can be applied in security system, manufacturing industry. .