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Question About First Alert Smoke Alarm SC9120B
My smoke / carbon monoxide detectors beep 3 times ...

My smoke / carbon monoxide detectors beep 3 times with a red flashing light that says move to fresh air. The two out of three that I have only do this. The date on the back of the detectors is June 25, 2009. Should they be replaced or should I be concerned?

Asked by Erika on 01/12/2013 1  Answer

ManualsOnline posted an answer 11 years, 10 months ago

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

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