Neighbor's house has five smoke alarms wired so that all go beep when one has alarm. Two of them, at the end of the alarm line, suddenly started beeping. I helped him replace the 9V battery in each but did not help. He bought two new ones and I replaced. Did not fix. Disconnected the red alarm lead on the one at the end of the line and it stopped beeping but had no effect on other beeper. Is it possible that the other three need replacing??? What is life of these Firex smoke detectors? The house is six years old in AZ. Thank you for consideration, Seamus J. Wilson
- posted
14 years ago