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Question About BRK electronic Smoke Alarm 4120B
My BRK Electronics model 4120B is chirping, with a...

My BRK Electronics model 4120B is chirping, with and without a brand new battery. It's been originally installed more than 10 years ago. Do I need a new one? Is there a store selling this smoke alarm product in the area of Richmond VA?. I want to use the same base and power connection plug if possible. D. Karion at dekarion@gmail.com

Asked by Demetrius on 02/17/2013 2  Answers

ManualsOnline posted an answer 11 years, 9 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, 4 months ago

5 you need the 9120b to replace it
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