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Question About BRK electronic Smoke Alarm 4120B
we have your product 4120b smoke detector dated 20...

we have your product 4120b smoke detector dated 2001 model. there are 6 sensors in our house however one seems to be trggering off and on during the day and night. we changed the batteries but this does not work. any ideas.

Asked by Robert A. Schaffrick on 06/29/2012 2  Answers

ManualsOnline posted an answer 12 years, 5 months ago

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

colin posted an answer 11 years, 7 months ago

0 the detector needs to be replaced
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