I have several rooms in my new (to me) house that have proprietary 2 Gang interface panels for communication with a whole house audio system which is no longer installed in the home. Sonos has replaced the previous system and no longer require the static room controls.
I would like to add some touchscreens which will fit in these locations (2 Gang Box) and can provide whole house information plus room specific controls.
I am looking for recommendations for hardware. Also interesting use cases for such technology would be fun to read about.