Ensupra PM002 Electricity Usage Monitor with Graphic Display and Power Meter Simply plug to your wall electric outlet and plug your appliance or any other home electric equipment to it Large Graph Displays Energy Consumption by the kilowatt- hour (7 days; 7 weeks; 7 months history in Bar Graph) Multiline Power and Cost; Displays Volt, Amp, Watt, kWh/Units of Electricity, Time, Cost and Kg of Co2 Displays Power Consumption ,Watts and Records KW-H (units of electricity );Assesses Appliance Efficiency and Save Energy