VIVOSUN Electricity Usage Monitor, Plug-in Power Watt Voltage Amps Meter with Upgraded Backlight LED, Overload Protection and 7 Display Modes for Energy Saving, White

• Electricity Usage Monitor: VIVOSUN power energy meter has various monitoring parameters, which can easily measure Power (W), Energy (kWh), Volts, Amps, Hertz, Power Factor and Maximum Power (W), time, days, and calculate how much electricity bill it cost in cumulative time Upgraded Backlight Version:  Large clear LCD display features a blue backlight, ensuring the display is easy to read even in dim light conditions: Backlight only light when the meter is connected to AC power and cannot light when using battery Data Memory Function: Come with 3.6V built-in rechargeable battery backup, the plug in power meter will record your power consumption data even if you remove it from socket. And you can continue reading data after you re-plug it. This feature is great for dealing with sudden power failure 3680W overload Instruction: Featuring overload protection, our energy usage meter will notify you if a unit is drawing more electricity than a circuit can safely handle Easy To Use: To set the amount charged per kWh in your house, you should plug your electronic appliance with the meter on the wall, and then it will start calculating the amount when the appliance works, Weight: 0.22 Kilograms, Manufacturer: VIVOSUN