[Digital Meter] Simply plug the device into the power supply via the meter socket to monitor real-time energy consumption. Save energy, save money, and protect the environment. [7 Precise Measurement Modes] The meter socket is equipped with an LCD display for easy data reading. The 7-mode energy consumption meter monitors power, voltage, frequency, current, power factor, cost, minimum and maximum power, and accumulated power. [Efficient and Easy to Use] The power meter socket is an ideal choice for household appliances such as computers, washing machines, TVs, game consoles, routers, refrigerators, kitchen appliances, and home lighting. To the greatest extent possible. [Built-in Battery] Use the built-in battery to save data after unplugging or turning off the device. It's also more convenient to configure and program the meter before plugging it into the socket. When the total power exceeds the power meter's maximum power (3680W), the LCD screen flashes and displays OVERLOAD. Specifications: If the buttons do not respond, press the RESET button to reset the device. Operating Voltage: 230V, 50HZ Operating Current: Max 16A Wide Voltage Range: 230V -- 250V Voltage Accuracy: ± 2%