... ,ISO9001,14001,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, ... energy (bi-direction) with LED power supply and phase loss indicators.5. Pulse output with optical coupling ... (5VA)Current Loop Consumption≤1VA DDS5558 Electronic watt-hour meter