Kuman Plug Power Meter Energy Electricity Usage Monitor Watt Voltage Amps Meter with Digital LCD Display,Overload Protec

Electricity usage monitor: Monitor is the killer of the high-cost energy appliance, helping you lower power consumption and save money.
Digital LCD Display: Large clear LCD display for easy reading, the screen size is 47cm*60cm.
Various Parameters: Power(W), Energy (kWh), Voltage, Amps, Power Factor, Cost and Minimum & Maximum Power, ideal for energy consumption monitor.
Overload Protection: Once the whole power exceeds the rated power of monitor, LCD will display OVERLOAD with booming noise to remind the user
Built-in Battery:With 3.6V rechargeable battery(NI-MH), It can store electricity. which allows meter to be moved and viewed without losing readings.