... 8) Multifunctional test port outputting 9) DDSD146 series of single-phase static multifunctional electric energy meter adopts the world's ... 485 communication, LCD multimode displaying and wakening, backlighting, motion impulse output and electricity pilferage proof 11) Power consumption: <0.7W ... , 5 (20)A, 5 (30)A, 10 (40) A Single Phase Static Multifunction Energy Meter ( static meter , kwh meter )