... Photo Switch,Photoelectrical Sensor 1, Principle:photoelectric sensor makes use of inspected object’s sheld and reflection to infrared lights, choose ... or normal closed,current:100--300mA),relay,logicgate,etc,movement distance within 5cm--10m selectable.4, Wiring:DC 2 ... ,Timer,Timer Relay, Solid State Relay, Proximity Sensor, ,Pressure sensor ,load cell sensor, KNE KSC box, Rotary Encoder and computer ...