MX Voltage Converter works at 110V AC supply. MX step down voltage converter will convert 220V to 110V AC supply. It provides safe operation to your electronic devices – Notebook Computer, Video Cameras, CD Players, Radio Cassettes, Razors, Walkmans, Battery Chargers, Flash Units, Telephones, Calculators, AC Adaptors, Strobes, etc. This converter allows you to use your appliance in U.S/ Canada or other country where voltage is 110 / 120V.