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Question About Nighthawk Carbon Monoxide Alarm KN-COPP-3
How do I determine if the CO detector is broken or...

How do I determine if the CO detector is broken or not? It was beeping and displaying 888 so we changed the battery but it still isn't working correctly.

Asked by Robert on 11/09/2014 1  Answer

ManualsOnline posted an answer 9 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

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