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Question About BRK electronic Smoke Alarm 4120B
I have the same problem. I have the BRK 4120B Smo...

I have the same problem. I have the BRK 4120B Smoke Alarms and all of them were going off randomly every few minutes yesterday. The batteries have been changed within the last six months, the lights were all green, etc. Had to shut them off at the breaker. Help!

Asked by Kathy on 06/03/2014 1  Answer

ManualsOnline posted an answer 9 years, 10 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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