... Overvoltage, undervoltage, under power, phase sequence, EExe overload (tE), Analog input.Measurement:Current--Ia, Ib, Ic, In, I_unblVoltage--Vab, Vbc, Vca ... (Optional)Energy (Optional)Communication:Modbus-RTUProfibus-DP2nd Modbus-RTUStatus input(DI):9 , can be extended to 20Relay output (DO ... )5, can be extended to 9One 4~20mA analog output Display:LED or LCDOrder information:For more information, ...