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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, 11 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, 6 months 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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