First Alert 9120B Smoke Alarms-We have 4 of these & they all started chirping at the same time. We changed all the batteries. 2 have stopped chirping but 1 is still chirping about every 30 seconds and the other beeps every minute or so. Help, I'm going crazy and my dog won't stop barking at the chirps. Thanks, Liz

Asked by Liz on 06/29/2009 2  Answers

ManualsOnline posted an answer 15 years, 3 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here
2 we have 5 smoke alarms 1 started chirping, replaced all batteries still 1 chirps need help
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