B
breezer
Maybe not with a cheap alarm panel, but some of the good ones can do this.
(Although I cannot remember which).
i doubt you will remember. Fire alarms are also 24 v intruder alarms are 12 v
I should point out out, i never said you can not add an additional sounder (in the bedroom), i implied that no one does, which is true, because most intruder alarms only have an internal sounder, a speaker and an external sounder (if they are lucky) no additional sounder in the bedroom.
in general most will not bother assuming that the different sound will wake them.
Yesterday for example, i had a "problem" here loads of noise, and i mean loads, mrs breezer slept right through, never stirred.