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Question About BRK electronic Smoke Alarm 4120B
Alarm going off for no reason...

The alarm went off several times in the night with no apparent smoke or fire. What could be causing this and what do you suggest that we do

Asked by Jane on 05/26/2009 2  Answers

ManualsOnline posted an answer 15 years, 6 months ago

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

Bo Carrington posted an answer 15 years, 4 months ago

5 Mine do this periodically and I have learned to take a can of compressed air and blow them out. Dust, bugs, etc... get in the sensors and set them off.
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