I was out at a remote camp when at 4.30 in the morn when 1 faulty alarm went off and since there all connected as one they were all chirping, So without delay i gave the approval to have them all replaced.
Everyone was shirty about being woken up but when they were all replaced that day they were all happy.
So do yourself a favour protect yourself and your family as winter is upon us check your alarms and replace your battery if there not hard wired.
Safety First..
..Cheers Kev.