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Question About Nighthawk Smoke Alarm None
instruction Manual...

Smoke Detector Nighthawk model: KN-COSM-B constant beep with new batteries installed. I need a manual or info on how to fix it. Thank you Ruben

Asked by Ruben on 01/28/2009 1  Answer

ManualsOnline posted an answer 15 years, 10 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

Janice posted an answer 10 years, 1 month ago

0 Check - Your middle battery is installed incorrectly.
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