Kill A Watt EZ
Connect appliances and it will assess how efficient they are
Large LCD display measures by the kilowatt hour
Shows operating costs of household appliances
Accurate to within 0.2%
Calculates costs and forecasts by week, month, and year
Built-in battery backup
Displays 8 units of measure
Operating Voltage: 115 VAC
Maximum Voltage: 125 VAC
Maximum Current: 15A
Maximum Power: 1875 VA