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. Various Parameters: Power(W), Energy (kWh), Voltage, Amps, Power Factor, Cost and Minimum & Maximum Power, ideal for energy consumption monitor. Smart Socket Time/Watt Protection Save Energy Power Meter Electronic ProductsThe product is shipped based on the color or size of the main image of the product page. Easily measure the power consumption and cost of your electrical appliances. Simply plug the meter into the wall and then plug your appliance into the meter. With the help of this Power Meter Monitor, You can make certain how much your standby appliances cost, what the power factor is, whether the appliances are really charged, and how long have your appliances been charged.