... U, I, P, Q, PF, F Two energy pulse outputs RS-485 communicationHarmonic MeterFunctionsFunctionPD194Z-9HYReal Time MeasurementU√I√P,Q,PF√F ... output, optical relay, constant 5000imp/kWh(kvarh)Communication Interface1-channel RS485 Communication interface, MODBUS-RTU protocol, Baud rate:2400-19200Switching Input4 ...