Here is what I understand on this. You can have a US version Nevo anywhere and will work fine on IR. If you wish to use a NC50 NevoConnect, it must match the RF frequency of the US Nevo and then the NC50 (assumming US) and the Nevo (assumming US) will pair fine together and work fine. However, trying to control native Zwave devices (locally purchased Zwave light switches, etc) in your market, the US frequency Nevo will not likely talk to these devices as your local Zwave devices in country are likely on a different frequency.

Dave