If I keep the ISY994 Z-Wave hub and SmartThings Z-Wave hub next to each other, would it cause any issues like Z-Wave signals fighting with each other?

 

Thanks,

Arun

 

The only dificulty you may experiences is when you change which if the primary controller.

I don't think there is a way to change which is the primary controller. Once the SmartThings hub is added to the ISY Z-wave network, the option to choose secondary controller disappears from the ISY admin console Z-Wave menu. In the past, I tried to remove the SmartThings hub and found that after removing the hub, I could not add any Z-Wave device to ISY. I opened a support ticket and Michel told me that the ISY Z-Wave card had "lost its home ID". My only option was to remove all Z-Wave devices from ISY, reset the ISY Z-Wave to factory default and re-add the devices. Major pain.