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).
"You can connect the sensor to 12 or 24 VDC adapter if you wish" is going
to look a mess, or involve making a large enough hole to tuck a socket and
adapter inside the ceiling where now there is just a hole for a cable.
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?