... in process controling and monitoring system for spacing,positioning detection,auto counting,speed and auto protection for production line ... normal closed,current:100--300mA),relay,logicgate,etc,movement distance within 5cm--10m selectable.4, Wiring:DC 2/3 ... ,Timer,Timer Relay, Solid State Relay, Proximity Sensor, ,Pressure sensor ,load cell sensor, KNE KSC box, Rotary Encoder and computer integrated ...