with regards to the isolation, most alarms i've seen fitted have a "base" which is hardwired to mains and then the alarm itself slides on and clicks in.
So surely if you want isolation to work on the alarm you just slide it off
and i think on a lighting circuit is better. Clearer Identification if it trips off
So surely if you want isolation to work on the alarm you just slide it off
and i think on a lighting circuit is better. Clearer Identification if it trips off