This is a kind of intelligent electricity meter, made of with full viewing angle color LCD screen, easy to read current electrical energy, cumulative electrical energy. Supports measuring the power, current, voltage, temperature, and humidity of connected appliances. Electric energy and timing can be reset. Electric energy and timing have power-down memory function. There are 3 types for you to choose: KWS-AC300-10A split type mutual inductor, KWS-AC300-100A split type mutual inductor, KWS-AC300-100A closed type mutual inductor, you can choose according to your demands.