Re: "fire alarms that can call the fire service."
"fire alarms that can call the fire service."
Seems unlikely.
The apartment block I'm in right now (in Wales, where they've started to take fire regulations relatively seriously) has recently had an upgrade to the communal fire alarm system to get compliant with current regulations.
Some folks had been mentioning wireless to avoid disrupting their precious decor.
The trade professionals all said "after several years experience with wireless, the industry has mostly concluded that affordable wireless is too unreliable and causes too many false alarms (of system faults), so unless there are specific reasons to choose wireless (which will make it *very* expensive to achieve the reliability), wireless is a non-starter.".
Stuff that doesn't need to be complicated works better when it's kept simpler. Who could possibly have thought that, eh.