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Question About Nighthawk Carbon Monoxide Alarm KN-COPP-3
Alarm show err. Beeps every 20 to 30 secs. Shows E...

Alarm show err. Beeps every 20 to 30 secs. Shows E09 when peak level button pressed and held. Shows 888 when test-reset button pressed. Thank you.

Asked by Ruth on 01/25/2015 1  Answer

ManualsOnline posted an answer 9 years, 2 months 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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