In the event a spare adapter is needed, we now offer one adapter that works for everything. It is a 12v 1.5A adapter that is rated for input of 100v to 240v 50/60Hz .4A. It is center pole positive & works overseas as well as in the US. 

It comes with blades for plugging into wall outlets in North America or the EU, so customers outside of those areas will need to purchase the correct adapter for the wall outlets in their country.