... alarm outputs&sensor power Conect to PC,PLC. DS8A series Sensor Controller(connectable to PLC,PC)Features: 1)Signal input: regular: ... 4-20mA/20-4mA output; measure range settable: 2 relay alarm output, mode selectable.4)Big inch LED 4 digit ... Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay, Proximity Sensor, ,Pressure sensor ,load cell sensor, KNE KSC ...