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