Function Meter & 7 monitoring modes Measurement and cost calculation of energy consumption and connected devices. A total of 7 monitoring modes, this plug-in electricity meter supports monitoring time, power, cost, cumulative power consumption, voltage, frequency, current, power factor, minimum power, the maximum power and the price of electricity. Precision and overload protection Built-in high-precision current sensor. Guarantees the best accuracy class 1.0. When the load is over 3680W, screen will flash OVERLOAD to warn users. Backlight and memory function Large LCD display with wide viewing angle and clear backlight. It can store meter readings and settings even when the meter is unplugged. Easy to use ABS plastic, safety and environment-friendly material. Easily calculate the energy consumption of appliances. Suitable for many electrical appliances, Christmas lights, bread machine, coffee maker, TV, HiFi system, DVD, computer, game consoles, printer, oven, etc. Easy to use Just press the FVNC on the energy meter to select the monitoring mode, COST button to set the unit electricity price, UP and DOWN buttons to set the price. RESET button to erase all settings, suitable for seniors and young people.