... Switch,Photoelectrical Sensor 1, Principle:photoelectric sensor makes use of inspected object’s sheld and reflection to infrared lights, ... , Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere ... Timer,Timer Relay, Solid State Relay, Proximity Sensor, ,Pressure sensor ,load cell sensor, KNE KSC box, Rotary Encoder and computer ...