Montezuma, Moctezuma, Moteczoma, Motecuhzoma, Moteuczomah, and Mwatazuma are variant spellings of the same word and may refer to:
Voltage, Frequency and Plug/Outlet Type in United States of America / USA. Electricity in United States of America / USA is 120 Volts, alternating at 60 cycles per second. If you travel to United States of America / USA with a device that does not accept 120 Volts at 60 Hertz, you will need a voltage converter.
Electricity in Italy. Electricity in Italy is 220 volts, 50 cycles alternating current (AC). For comparison, in the United States it is 110 volts, 60 cycle AC current. If you plan on using your own 110-volt appliances, you will need a voltage converter, unless your appliance is designed to also work with 220 volts electricity (dual voltage).