Photo Switch 1,Output:NPN or PNP,NO/NC; 2.Wiring:DC 2/3 wires,AC 2/3 wires; 3.CE ... certification. SG series Photo Switch,Photoelectrical Sensor 1, Principle ... .The move distance is much large than proximity switch,up to 10m;can drive relay,AC contactor ... 10m selectable.4, Wiring:DC 2/3 wires,AC 2/3 wires,standard cable and interface,various dimensions available. ...