Step-up/Step-Down Transformers convert electrical voltages up from 110-120 volt to 220-240 volt, or down from 220-240 volt to 110-120 volt. Included adaptor allows input connection to common grounded power supplies in North America, Europe, and many other parts of the world. Universal output accepts North American, UK, European, and other plugs. Transformers have an on/off switch, two spare fuses, and are CE marked. Do not exceed maximum rated wattage.