... IEC 4)OEM DDS Electronic Single-phase Energy Meter,Electric Energy Meter,kWh Meter,Power Meter,Iron base, ABS cover, digital Three- ... phase Static Active Electronic Energy Meter,Electric Energy Meter,kWh Meter,Power MeterMain Characteristics and Functions:1. Adopting ... with LED power supply and phase loss indicators.5. Pulse output with optical coupling isolated.6. May add RS- ...