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Question About Nighthawk KN-COPP-3
My unit keeps beeping...

My co detector keeps beeping. Not constantly, but intermediately. When it beeped I hit the reset button and it showed 216. What does this mean? I cannot find the manual anywhere.

Asked by Michele on 03/29/2009 0  Answer

ManualsOnline posted an answer 15 years, 6 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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