I just bought a SEM to attach to a ADT branded Vista-20p.
I was told it was compatible. The prom says 2005-4.2.
Now I’m finding that this means that “uploader/downloader” functionality will not be available.
I have no idea what that means. Will it work? What exactly is the functionality that I will be missing?
It looks like I can buy a prom from alarm.com for $26. Can I do this after setting everything up?