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. Features: Made of flame-resistant nylon material, stable installation with fine durability and can provides long service time. 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. Rated frequency 45-65Hz. 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. The difference between split type mutual inductor and closed type mutual inductor: The split type mutual inductor: euipped with one buckle for easy install and easy assembly. The closed type mutual inductor: wires needs to be threaded from the center of the transformer circle. Operating Instructions: Click the MENU button on the panel to view the current electrical energy and cumulative electrical energy. Electric energy and timing reset method: Press and hold the MENU button for 5 seconds, the number in the timing area will flash, then click the button to select timing, current electrical energy and cumulative electrical energy reset. When the number flashes, double-click the button to reset. Press and hold the button for 5 seconds to save the settings. Specifications: Name: Intelligent Electricity Meter Material: ABS+PC+VO Model: KWS-AC300-10A split type mutual inductor, KWS-AC300-100A split type mutual inductor, KWS-AC300-100A closed type mutual inductor (optional) Model: KWS-AC300-10A Voltage: AC50-300V Current: 0-1OA Power: 0-3000W Capacity: 0.01-19999Kwh Timing: 0-200H Temperature: -10℃-99℃ Item size: 85 * 44 * 21mm / 3.35 * 1.73 * 0.83in Item weight: 60g / 2.12ounce Package size: 50 * 27 * 88mm / 1.97 * 1.06 * 3.46in Package weight: 65g / 2.29ounce Model: KWS-AC300-100A Voltage: AC50-300V Current: 0-100A Power: 0-30KW Capacity: 0.01-19999Kwh Timing: 0-200H Temperature: -10℃-99℃ Item size: 85 * 44 * 21mm / 3.35 * 1.73 * 0.83in Item weight: 90g / 3.17ounce Package size: 64 * 50 * 88mm / 2.52 * 1.97 * 3.46in Package weight: 95g / 3.35ounce Packing List(KWS-AC300-10A ): 1 * Intelligent Electricity Meter OR Packing List(KWS-AC300-100A-split type): 1 * Intelligent Electricity Meter 1 * Mutual Inductor 1 * Cable OR Packing List(KWS-AC300-100A-closed type): 1 * Intelligent Electricity Meter 1 * Mutual Inductor 2 * Cable