Parameters: Color:White Working voltage: AC 120V Working frequency: 60Hz Wide voltage range: 110V-130V Working current: 15A max Power display: 0W-9999W Voltage display range: 0V-9999V Frequency display: 0Hz-9999Hz Current display: 0.0A---15.0A Cost display range: 0.00cost/kWh---99.99cost/kWh Timing display range: 0 seconds ---999​​9 days Total kWh and cost display: 0.000kWh---999​​kWh, 0.00cost---999​​9cost Packing list 1* Electrical Meter Sockets (EU,US,UK Plug is Optional) 1* Instruction Manual*1 Note: 1.Please allow slight size deviations due to manual measurement,measuring methods and tools. 2.The picture may not reflect the actual color of the item because of different photographing light and display monitor.Thanks for your understanding. Energy consumption monitors are used to measure the power consumption, current, voltage, power and cost of connected devices, helping to save energy. 7 display modes can display time, watt, cost, accumulated power, voltage, frequency, current, power factor, minimum-power, maximum power, and price. The large LCD screen with backlight is clear and easy to read. Please read the numbers on the front angle of the LCD screen, not from the side. Electricity price setting. You can set it between 00.00 COST/KWh-99.99 COST/KWh according to the actual situation. The overload setting when the current load power exceeds the maximum value. When the load is powered on, the OVERLOAD letter on the LCD will keep flashing to remind you.