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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, 8 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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