... active energy 3.Adopt dedication meterage chip ADE7755 Static Single-Phase Electric Energy Meter uses advanced special recording integrated circuit with high precision ... used in AC single-phase watt-hour with its recording frequency of 50Hz, it is highly accurate, reliable, durable, low power consumption, without ... Avoltage 220V,230Vfrequency 50/60Hzclass 1.0 or 2.0 Single phase electricity power meter