Monitoring Modes: This energy meter socket monitors multiple parameters, including time, cost, accumulated energy consumption (kWh), voltage (V), frequency (Hz), current (A), power factor, minimum and maximum power (W), electricity price per unit, all of which monitor the device. Memory Function and Backlight: Automatically saves data in case of power failure. The date can be saved for up to 90 days, but immediate data such as voltage is not saved. After connecting the device, press any button to make the backlight appear for 10 seconds. With a large LCD screen, the power meter is easy to read. Overload Protection and Safety: \"OVERLOAD\" flashes on the LCD screen to remind the user that if the power of all connected loads/currents exceeds 3680W/16A, the power consumption will simultaneously shut off the power, check the load and reconnect it before use. Easy to Use: Just press the \"FUNC\" button to select the monitoring mode, the \"COST\" button to set the individual current price, the \"UP\" and \"DOWN\" buttons to set the electricity price per unit. The \"RESET\" button can clear all settings (including the electricity price per unit). Accuracy and Real-time Monitoring: The energy meter, professionally designed and well-made, ensures the accuracy of energy consumption. Reduce electricity waste with the real-time meter, which helps you save energy and money.