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Question About Nighthawk Smoke Alarm KN-COSMXTR-8
My Nighthawk smoke alarm/CO detector just went off...

My Nighthawk smoke alarm/CO detector just went off. Not a fire or CO signal, just one long continuous signal--not a beep, a continuous signal. Hitting the reset button only turns it off for a half second. Had to remove battery. Why is it going off?

Asked by jen on 09/13/2014 0  Answer

ManualsOnline posted an answer 10 years 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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