ITEM NAME:2M Retroreflective Photoelectric Switch w Reflector Panel C2Y5 2M Retroreflective Photoelectric Switch w Reflector Panel C2Y5 Model: E18-R2P1; Type: DC 3 Wire, Retroreflective Type: Voltage: DC 10-30V; Current: 200mA; Sensory Distance: 2m 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) Cable Length: 120cm/47"; Head Diameter: 1.6cm/0.6" 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 reach the receiver; Can be applied in security system, manufacturing industry Package Content: 1 x Photoelectric Switch 1 x Reflector Panel Note:Light shooting 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.