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Question About Nighthawk Carbon Monoxide Alarm KN-COPP-3
I have 2 nighthawks that plug in to the wall socke...

I have 2 nighthawks that plug in to the wall socket and one is displaying the number 7 the other the number 10. What does this mean? They have always displayed 0. I have had them for years now. Could they just be no good now?

Asked by Hope Carl on 04/02/2015 1  Answer

ManualsOnline posted an answer 9 years, 7 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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