... current and voltage, phase between phase voltage, frequency, power energy, phase sequence, active power, reactive power, apparent power, power. It is a multifunctional, digital, intelligent tester ... for analysis and managementCommunication WireRS232 communication wire, 1.8mFrequency50Hz ,60Hz automatic identificationGear ShiftAutomatic shiftSample RateAbout 2 times/secondLine VoltageBelow AC 600V ...