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Question About Nighthawk Carbon Monoxide Alarm KN-COEG-3
My nighthawk carbon monoxide/explosive monitor tha...

My nighthawk carbon monoxide/explosive monitor that plugs int a wall outlet has ERR in display, I changed the battery , no help, does that mean the unit has to be replaced

Asked by Leonard on 10/05/2011 1  Answer

ManualsOnline posted an answer 13 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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