... AD special measuring chips 3) Four charging rates, eight periods, two sets of period meters, four time zones, twelve holidays 4 ... battery voltage 8) Multifunctional test port outputting 9) DDSD146 series of single-phase static multifunctional electric energy meter adopts the world's advanced ... 220V, 5 (20)A, 5 (30)A, 10 (40) A Single Phase Static Multifunction Energy Meter ( static meter , kwh meter )