Geeknews

Electric bills can be murder. But now you can cut down on costs and find out which machines are actually worth keeping plugged in. Simply connect your appliances to the Kill-a-Watt electricity usage monitor and it will assess how efficient they really are.

A large LCD display counts consumption by the Kilowatt-hour just like utility companies. You can figure out your electrical expenses by the hour, day, week, month, even an entire year. Monitor the quality of your power by displaying Voltage, Line Frequency, and Power Factor.

It can display volts, amps, and wattage within 0.2 percent accuracy.