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Question About Nighthawk Carbon Monoxide Alarm 900-0039-00
Unsure if this still works...

I found this in a box and this particular unit had not been used in years. Should Carbon Monoxide detectors be replaced ever? It appears to work. This particular one is digital, and after a few minutes reads zero and is very loud when you plug it or unplug it....

Asked by Beth on 12/18/2008 0  Answer

ManualsOnline posted an answer 15 years, 9 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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