The fire alarms in all of my dwellings to date are wired into the mains.
Pulling the battery completely will simply cause them to beep incessantly.
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The BRINKS home security system I recently battled with (see my post elsewhere in this thread) had a lead acid battery that was used much like a UPS.
Luckily ours was a deactivated installation. Had it been an active installation there would've been NO WAY to disable the low battery alert aside from replacing the battery. (As disabling the panel entirely is the only option; which would've triggered a call to the police.)
Good luck replacing a 12V lead acid battery at 1 AM ... I have trouble finding them during my waking hours. At least there's a chance you'll have a decently charged 9V cell tucked away in a desk drawer.
Pulling the battery completely will simply cause them to beep incessantly.
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The BRINKS home security system I recently battled with (see my post elsewhere in this thread) had a lead acid battery that was used much like a UPS.
Luckily ours was a deactivated installation. Had it been an active installation there would've been NO WAY to disable the low battery alert aside from replacing the battery. (As disabling the panel entirely is the only option; which would've triggered a call to the police.)
Good luck replacing a 12V lead acid battery at 1 AM ... I have trouble finding them during my waking hours. At least there's a chance you'll have a decently charged 9V cell tucked away in a desk drawer.