Reliance Controls Ammeter and Wattmeter THP103 AmWatt Appliance Load Tester/Plug, Blue Meter gives instant, accurate digital readout Readout measures amps or watts used by common-cord connected household appliances (1.0 to 15.0 amps, 125 to 1,875 watts) Long 26-inch cord reaches remote electrical outlets Rugged, high-impact construction Easy slide-switch action insantly converts between amps and watts