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Question About Nighthawk Carbon Monoxide Alarm KN-COPP-3
I just put in new batteries and I am getting a bee...

I just put in new batteries and I am getting a beep every 20 or so seconds and it says Err

Asked by Pat on 11/06/2013 2  Answers

ManualsOnline posted an answer 10 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

Rewarder User posted an answer 10 years, 1 month ago

5 You need to reset you alarm. Hold down the round button for 3-5 seconds and that should fix it.
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