Power Meter Plug Energy Monitor Wattmeter Backlight LCD Display Power Usage Monitor Consumption Analyzer Voltage Amps Power KWH Socket Power Meter Socket, Updated 180 Viewing Angle Multiple Measurement Functions: This energy meter can measure and display voltage, current, energy, frequency, power factor, maximum current and power, time-day cost and total kWh. 7 modes of energy monitor plugs for your choice. Note: Day and Time only apply to devices with a power greater than 2 watts. (Time is not counted when the device is in standby mode). Overload alarm function: When the rated power exceeds 3680W, the power consumption monitor will automatically alarm to remind the user. The power plug will be cut off at the same time to prevent damage. A reliable electricity usage monitor for electricity consumption meters used in UK households. Better viewing experience: Updated AC power meter, large and clear LCD display, 180 viewing without dead angle, with backlight function, clear visibility day or night. The blue backlight will automatically turn off after 10 minutes of inactivity. Press any button to wake up the backlight. Backlight time: 10 minutes. Automatic data storage function: When the power is suddenly cut off, the last data is automatically stored. Don 39;t worry about data loss caused by sudden power outage. Great home energy monitor, power monitor, home energy monitor, meter and amplifier monitor. Press FUNCTION and UP at the same time to clear accumulated data without deleting your settings (such as price, etc.). What you get: UK plug power meter to monitor all your home applications, helping you reduce power consumption and save money. Consumption and time are not measured and calculated in the following cases: your device is in standby or not working; Your device 39;s power rating is less than 2 watts. If the power meter goes to 0 when the power is turned off and on, it may be because the test time is less than 1 hour, or the total kWh is less than 0.1 kWh. That 39;s why the data is not saved. What data can be saved Electricity, cost, unit price, accumulated time. (but does not save current, voltage, power, power factor) You can quickly set the electricity price (GBP/kWh) by pressing the COST button to switch to mode 7 How to clear accumulated data without deleting settings Press FUNCTION and UP at the same time to clear the accumulated data without erasing the previous settings. After the backlight is automatically turned off, press any key to wake up the backlight (backlight time: 10 minutes) Pressing RESET will clear all data, including your previous settings. NOTE: Please use a ballpoint pen to press the RESET button, using a pin may cause the button to snap into the device.