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Question About First Alert Carbon Monoxide Alarm CO350MRVA
I have a First Alert CO Alarm, Model CO350MRVA, ba...

I have a First Alert CO Alarm, Model CO350MRVA, battery operated, in my Travel Trailer. I do not have a manual. What does 3 beeps every 60 seconds mean? tyvm

Asked by Tom on 07/03/2012 1  Answer

ManualsOnline posted an answer 12 years, 5 months ago

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

Tom posted an answer 12 years, 4 months ago

0 An update. Found my Owners Manual! 3 Beeps mean "End of Life". "Unit must be replaced". It lasted 3 years, not 5, will see if warranty is honoured.
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