Photo Switch 1,Output:NPN or PNP,NO/NC; 2. ... 2/3 wires; 3.CE certification. SG series Photo Switch,Photoelectrical Sensor 1, Principle:photoelectric sensor makes use of ... objects.The move distance is much large than proximity switch,up to 10m;can drive relay,AC contactor or ... measurement.3, Ouput:NPN,PNP(normal open or normal closed,current:100--300mA),relay,logicgate,etc,movement distance within ...