As far as I know, there are different versions of a NevoConnect and NevoQ50 for each region (US and EU) and they will only be able to talk to each other if they are from the same region. As a side note, I have never heard of a Z-Wave enabled device which can work in both regions due to the different frequency bands used, keep in mind the hardware needs to be tuned for each region and I could not find a solution that supports both frequencies on Z-Wave website ( http://www.z-wavealliance.org/ ).