Directly to a precise measurement, LCD display shows , current, power, electric quality, power factor and frequency. A practical tool for your home. Features - Color: Black - Material: Plastic. - Size: About 9x5.5x2.8cm - Rated power: 22000W - Rated current: 100A - : 110- - Range: 0.01-100A (current), 0.01W-22000W (power) 0.01-99999KWH(electric quantity) - Accuracy: +/-1%( ) +/-2% (current/power) - to display , current, power, electric quality, power factor and frequency. - Suitable for fridge, TV, air-conditioner, tank, and etc. - Adopt flame-resistant material, safe to use. - With backlight, you can read reading at night or low light environment easily. - With overload alarm, while current power is lower than overload power, alarm will reset. - Note: you need to install mutual inductor in order to work normally, wiring direction needs to be the same as arrow direction on mutual inductor. Package list: 1 Meter 1 x Mutual Inductor