... Single-phase Electionic Multi-rate Watt-hour Meter 2)Output:2000pcs/day 3)CE,CB,ISO9001,14001,IEC 4)OEM GeneralThe DDSF726 type electronic single-phase multi ... -rate watt-hour meter is composed by the electronic single-phase watt-hourmeter part and multi-rate part, ... reliability. It can measure the time-sharing single phaseFunction and features2.1 Each of four periods ...