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Question About First Alert Carbon Monoxide Alarm CO605
Whwn I push the test button on my CO400 I get one ...

Whwn I push the test button on my CO400 I get one beep followed by a pause and then four beeps repeated twice, both indoors and outside. What does that mean?

Asked by Fred Horton 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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