... , adopt MODBUS-RUT communication protocol. SpecificationParameter Input voltage displayNetwork3 phase 3 line,3 phase 4 line Voltage Rated voltageAC100V,400V(please note when purchase ... classElectric energyFour quadrant measurement, active poweraccuracy rate0.5 class, reactive power accuracy rate1 classDisplayProgrammable, switching, circular two, three, or four rows ...