... CB,ISO9001,14001,IEC 4)OEM GeneralThe DDS226 type single-phase electronic watt-hour meter adopt exclusive use LSI,the device typifying new ... power consumption, long life etc, is suitable for the single-phase AC active electric energywith rated frequency of 50Hz.Function and ... digital multiplier overseas, greatly improved dynamic working range of Meter, making 1 multiple actual overload;2.4 Have good ...