P3 815825012707  Kill A Watt Electricity Usage Monitor, 2-Pack 2 Pack of P3 P4400 Kill A Watt Electricity Usage Monitor Large Led Counts Consumption By The Kilowatt Hour Connects To Household Appliance & It Will Assess Its Efficiency Calculates Electrical Expenses By The Day, Week, Month Or Year Checks The Quality Of Power By Monitoring Voltage, Line Frequency & Power Factor