... production line for electrical parameters measurement.2) Features:voltage/ampere ratio set freely, input isolation among phases, ... up to 8 segment output control, parameters:under- voltage/under-ampere/over voltage/over ampere/power/power factors selectable,analog output 4 ... Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, ...