Goldsource STU-100 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 100 Watt CE Certified step-up and step-down AC voltage transformer converts from 110V up to 220V or from 200/220/240V down to 110V. (Please note a voltage converter does NOT change the frequency, in another word, what goes in is what comes out, either 50 Hz or 60Hz) 100 watts Maximum Load Capacity (MLC), most suitable and cost-effective for devices such as small lamps, clock radios, mobile phone chargers, tablet charger, digital camera battery chargers, portable DVD players, and devices with the Maximum Power Consumption (MPC) between 1 and 70 watts Simultaneous Triple Output: 5 VDC(USB), 110 VAC for devices that require 100-120V and 220 VAC for devices that require 200-240V Four input voltages selectable: 110V/200V/220V/240V All range fuse protection with two spare fuses and one plug adapter included