You can help reduce your energy costs with the Kill A Watt EZ electric usage monitor. Plug the monitor into a wall socket and then plug the appliance into the monitor. The large LCD will display the kilowatt hour power consumption with the battery backup and built in memory retaining the accumulated readings if the power is interrupted. Program in your local electric rate and you can also display projected costs by the hour, day, week, month, or year. Evaluate the quality of the electrical power provide by monitoring voltage (V), line frequency (Hz), and power factor (VA). Perfect for detecting voltage drops and brownout conditions before they damage delicate equipment. Specifications: Accuracy: +/- 0.2% Input Power: 115 volts AC, 60 Hz Max Current: 15 amps Max Voltage: 125 volts Max Power: 1875 VA Dimensions: 5.1 inches long x 1.6 inches thick x 2.4 inches wide Approvals: ETL (c), ETL (us) Origin: China Manufacturer Warranty: 1 Year