... 3 phase multi-function power meter:1) To measure: Voltage, Current, Active Power, Reactive Power, Power Factor, Frequency (Hz), ... Two alarm output for Voltage, Current, Power Factor, Active Power, Reactive Power;7) Transformed analog output 4-20mA for ... RS485 communication function (Modbus RTU protocol);9) With power down memory function for KWH / KvarH. ModelAlarm AnalogCommunicationPulse OutputON ...