... 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, LCD display,infrared ...