7 Monitoring Modes This outlet power meter supports 7 monitoring modes, including time, power, cumulative power consumption, voltage, frequency, current, power factor, minimum power, maximum power, and electricity cost. Real-Time Monitoring Simply connect your electronic devices to this power consumption meter. The energy meter starts monitoring and recording the power consumption and electricity cost of the connected device, helping you understand the energy usage of your home appliances. Backlight and Memory Function With a built-in backup battery, this power consumption meter retains data in the event of a power failure. Press any key to wake up the backlight for 10 seconds to check the data in the dark. Overload Warning When the connected device exceeds 3680W, "OVERLOAD" will flash on the LCD screen to alert the user, helping protect both the connected device and the power meter socket. Easy Operation Press the FUNC button on the energy cost meter to select the monitoring mode. Use the COST button to set the electricity unit cost, and the UP and DOWN buttons to adjust the value. Press the RESET button to clear all settings. This simple design is suitable for users of all ages. Product Information This power meter for socket offers easy application with 7 monitoring modes for multiple data tracking. It provides real-time monitoring of home appliance energy consumption and usage. Its compact size saves space and is ideal for various devices, such as computers, air conditioners, refrigerators, dishwashers, microwaves, and more. HOW TO USE? How is the unit electricity cost set? - Long press the COST button until "Cost/kWh" flashes in the lower right corner. - Briefly press the FUNC key to change the digit position from left to right. - Use the UP or DOWN buttons to set the number. - After setting the unit cost, briefly press the COST button and then the FUNC button to exit the menu. FUNC: Press the FUNC key to select monitoring modes. RESET: A small button located in the bottom right corner of the display. Use the included needle to press it if needed.