... , harmonic and quality of electrical network analysis, 4 logic inputs, 3 relay outputs and RS485 communication. Therefore ... 0.2VAPulse outputMode: Optocoupler pulse output CommunicationRS485 (Modbus-RTU)Logic input (DI)4 drying contact inputs, with +5V powerLogic ... ≤4VAIsolationPower / current input / voltage input: AC2kV/1min; Power / logic inputs / RS485: AC1.5kV/1min; Inputs / outputs / housing >5M ...