Description Directly to a precise measurement, LCD display shows voltage, 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- Voltage: 110-250V- Range: 0.01-100A (current), 0.01W-22000W (power) 0.01-99999KWH(electric quantity)- Accuracy: +/-1%(voltage) +/-2% (current/power)- One screen to display voltage, 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 installmutual inductor in order to work normally, wiring direction needs to be the same as arrow direction on mutual inductor.Packing list: 1 x Energy Meter1 x Mutual Inductor