I know why you are asking this!
In fact I have the same question, but in my case I have already bought a twin pack and I am now trying to decide if I buy another one with the same goal: a single four-disc system.
To me the two discs look pretty much identical, but I am not really sure if I would be able to configure a single network out of the four discs.
Cheers for your reply. I suppose a way to find out would be to swap the two discs over and if it still works then we are good right!?
Would be great if someone knows the answer though.
Yes, you can combine discs from different packs. You can have up to 6 discs in a single system.
Note: Discs from different packs need to be synchronised with each other. You should install 1 pack first, then install the other discs using "Add Another Disc" in the app.
I'm having a problem connecting two sets of two discs. So I've set up the first two discs as a Whole Home wifi network but of course the additional two discs have another wifi name and don't want to join the first network. I have connected the Ethernet cable as directed by the app, allowed it to do it's thing and then turned it off, disconnected it as instructed.
After moving the 3rd disc into a new location and turning it on, it isn't recognised with the Whole Home network, it glows red and the app doesn't find the 3rd disc.
it's got to be a complex operation and isn't clear which network the app should be connected to or how to successfully connect all 4 discs.
Any help would be greatly appreciated, I'm hoping I don't need to get a refun, I'd rather get it working.