... /day 3)CE,CB,ISO9001,14001,IEC 4)OEM GeneralDDSIF726 single-phase electronic carrier multi-rate Watt-hour meters are mainly used ... communications, accurate and reliable, with high meter reading; 2.2 Automatic relay functions;2.3 The rate time can be provided ... (A)5(30),10(60),15(60),20(80)Rated voltage (V)220Rated frequency (Hz)50 or 60Accuracy classClass 1 or ...