⏲️BBackup Battery & Memory Function - With built-in backup battery, the last data is stored automatically when the power supply abruptly lose. Don't worry about data loss due to a sudden power outage. ⏲️Overload Warning - Once the load exceeds the power value you’ve set (Max. 3120W or 13A), the LCD will keep flashing “OVERLOAD” icon on the screen. You will know which appliance is high energy consumption. It helps a lot in ensuring electricity safety in your home and minimizing the loss. ⏲️7 Monitoring Modes - The energy monitor plug supports display time, wattage, cost, cumulative power consumption, voltage, frequency, current, power factor, minimum power, maximum power, electricity price. ⏲️Energy & Money Saving - Use this power meter to monitor the real-time power consumption, current and electricity cost of your electrical appliance, help you save energy and money. ⏲️Better Visual Experience - Maxcio's new upgraded version of the power meter is a large clear LCD display with backlight function. 360° viewing without dead angle, it is clearly visible whatever day or night. Press any button to wake up the backlight. ( Note: The backlight time is 5 seconds, it won't bright when the power is off.).