... power, reactive power, kwh, harmonic, extreme value etc. With RS485 interface. AccuracyEnergy measuring: active energy class 0.5; reactive energy class ... VAFunction modulesEnergy pulsePassive optocoupler collector outputCommunication interfaceOne-way RS485 communication interface; MODUBS-RTU communication protocolCommunication baud rate: 4800-9600, Parity mode N81On-off ...