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When we use household appliances, often don't know which electrical power more, this design is to normal electrical excuse to plug into the socket before action, extra steps to a song, the appliances connected to the first "billing outlet" from "billing outlet" can accurately know electrical power, and the amount of electricity, in order to knowwhich electrical appliances more demanding, which is moreenergy-saving.
Dalian Minzu University
Dalian, China
Xuefei Liu
Di Fang
Baihui Yang
Xingxing Ren