... automatic meter reading.DDZY135 single-phase energy meter (electricity meter ) is designed for measuring active energy in single-phase alternating current power ... grids by connecting up resident power supply system. The energy meter can be tailored ... V, 220V, 230V, 240VReference frequency: 50Hz or 60HzBasic Current (Maximum Current) 1.5(6), 5(20),10(40), 10(60 ...