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Question About First Alert Smoke Alarm 9120B
smoke alarm was beeping ... assumed lo battery ......

smoke alarm was beeping ... assumed lo battery ... changed (9V) battery ... still beeping and now sounds like there might be 2 separate beeps

Asked by Lynnette on 03/09/2013 2  Answers

ManualsOnline posted an answer 11 years, 8 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

roman posted an answer 10 years, 11 months ago

0 I already have three smoke alarms with this same problem.The batteries are fully charged. I cleaned the alarms with compressed air, changed the batteries and they still beep. Seems like these First Alert Model No. 9120B have a life span of 5 years.
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