... synchronous circuits to detect the existance of objects.The move distance is much large than proximity switch,up to 10m; ... or normal closed,current:100--300mA),relay,logicgate,etc,movement distance within 5cm--10m selectable.4, Wiring:DC 2/3 ... flowmeter,Timer,Timer Relay, Solid State Relay, Proximity Sensor, ,Pressure sensor ,load cell sensor, KNE KSC box, Rotary Encoder and computer integrated ...