The mains powered smoke detectors in my house need replacing.
At some future time I'm considering using Z-wave for some heating controls. Having mains powered Z-wave nodes to help with mesh connectivity seems like a good idea, and having alarms where one sensor can set off all the alarms also seems sensible (but not so worthwhile I'm keen to pull new signal wires through).
Mains powered alarms with radio interconnects that don't specify a standard and are presumably manufacturer specific are easy to find (and would be easier to set up the networking).
Other battery powered Z-Wave connected alarms exist.
But not, as far as I can find, the combination. Am I missing something?
And if I did switch to battery-only powered alarms, what's the best way to safely and neatly terminate the existing cable without enlarging holes more than necessary, and without sticking junctions boxes on the ceiling?