Energy Monitoring Measure and calculate monitoring time, voltage, active power, energy cost, and more for your connected devices. This reduces energy costs and extends the life of household appliances. Overvoltage ProtectionElectrical voltage: 230V AC 50Hz, maximum current: 16 amps, maximum power: 3680W. Once the load exceeds the power value of 3680W or 16A of the maximum load of this socket meter, the OVERLOAD icon will flash on the display, to indicate which appliance is consuming a lot of energy or if an error has occurred. Energy Cost Meter with LCD Display Simple operation via 2 buttons to display various data, measure and calculate energy consumption (0.00 - 9999.9 kWh), active power (0.1 - 3680 watts), mains voltage (200 - 276 volts) and energy costs (0.00 - 99.99 ) Precautions If there is an abnormal display or the button does not work, you need to reset the item. Press the RESET button to reset it. The plug has a power-off protection function. Even if you unplug the device, your readings and measurement parameters are saved.