... , Anti-Vibration.Performance CharacteristicsHigh-precision measure three-phase voltage,three-phase current,active power,reactive power ,apparent ... 0.02Hz Signal InputMode of connectionsingle-phase ,three-phase three-wire,three-phase four-wireRated voltageAC57.7V ,AC ... AC380V,AC100V,DC48V,DC24VPower dissipationLess than 4VA Function Module Communication interfaceNo. 1 RS-485 communications,Modbus-RTU ...