1、COMPREHENSIVE AND PRACTICAL: Power meter plugs can monitor appliances' power (W), energy (kWh), volts, amps, Hertz, power factor, cost, minimum and maximum power (W), cumulative date and time. By switching between seven display modes, you can easily understand various parameters as the device works. You can also calculate and display how much power your device is using and how much spending on electricity over cumulative time period 2、SHARPER DISPLAY BACKLIGHT: The larger screen measures 2.36in x 1.85in, and the electric display allows for more visible data, day or night. The 180° full width viewing angle is perfect for reading and recording data at any angle. No need to bend over the front of the display to read the numbers 3、OVERLOAD PROTECTION: When the power of electrical appliances exceeds the overload power, the LCD displays overload to warn users. All buttons will stop working and will only work if the load power is reduced or removed. The default overload power is 1800W, which can be adjusted from 0 to 1800W 4、POWER OFF MEMORY: When you remove the power meter from the socket or remove the appliance from the power monitor, the power meter records your power consumption data. The next time you use, you can see the final data directly. This feature also automatically saves data in the event of a sudden power outage 5、MUST HAVE ACCESSORIES: Power meter analyzer is ideal for monitoring the electricity consumption of household appliances, controlling power consumption and saving cost. Best choice for voltmeter, kilowatt meter, and ammeter