On 18/10/2020 10:41, Scott wrote:
The Scottish Government has introduced legislation requiring smoke and
heat alarms to be interlinked:
https://www.gov.scot/publications/fi...cottish-homes/
As I see it, this can either be done by hard wiring or wireless
connection. Leaving aside cost and aesthetics for the moment, am I
right in thinking that wireless might be the safer option in case the
cables are damaged by the fire?

I think that it would be a major fire that damaged the cables. AFAIK,
though, wireless is standard. I fitted some battery powered ones to
MIL's bungalow years ago, and they worked really well.


If I go for mains-powered units, could these be connected to the
lighting circuit or should there be a dedicated circuit?

Yes, lighting circuit. They have back-up batteries in them, so they'll
continue working if the power is out.


I assume a separate link cable(s) is needed (not a signal via the
existing wiring). Should these be armoured to protect from fire :-)


You may be over-thinking this.