Power supplies are from 220 to 240 volts ac will work but what are the cycles if it is 50 cycles it won't work for 60 cycles
check the power supply available in the area you wish to use it and if it is not the same , leave it behind and get a new one that is sold in NZ

Bill Boyd is incorrect, the vast majority of items that work on 50 cycles will work just fine on 60 cycles, the power supplies inside are not that exact and can handle both. (I'm an Electronic Technician of 30 years, I do know what I'm talking about.)
If you have 110~120V where you live, you'll have to use a transformer rated for the current (amps) OUTPUT the brewstation is rated for that will step-down from 220~240v.
Depending upon the cost of that transformer, it may be cheaper as Bill suggests to get a new one when you get there.