Retail Price: $23.92
SALE PRICE: $18.40

  • Add to Project
    Our Project Manager allows you to:
    • Create multiple projects.
    • Store contact information and billing addresses.
    • Add & remove items as the vision of your project unfolds.
    • Select "Request A Quote" and a customer service specialist will contact you about your project.
    It is simple and free. All you need to do is create an account or login here.
  • Bookmark This
  • Send to Friend
  • Print This
Questions? Call 1-800-239-2939
Mon—Fri, 8am—5pm CST

BRK - Smoke Alarm 120V with Battery Backup - 9120B


Manufacturer: BRK Electronics
Item Number: RLLD3029BRK


Designed for the fastest possible installation! If AC power fails, the battery back-up keeps the smoke alarm working. Can be interconnected with up to 11 additional smoke alarms and 6 compatible devices like bells, repeaters or switches. It's features include:
  • Ionization Sensor
  • Quick Plug-In Power Connector
  • 120 VAC; Interconnectable
  • Alarm Indication
  • Battery Drawer Lock
  • Mounting Bracket Lock
  • Swing-Open Battery Door
  • Battery Activation Tab
  • Battery Back-Up
  • AC Power Indicator
  • Low Battery Warning "Chirp"
  • Missing Battery Tab
  • Easy Install Mounting Bracket
  • 9V Battery Included
  • (old model # 4120B)
  • 10-Year Limited Warranty On Alarm

Read what other customers had to say about this product:
Question about FireX - Smoke Detector 120V with Ba - 4/25/2006
Is the plug-compatible with my existing wiring for AD/ADC/FX1218?Thanks.... ( read more )
Question about FireX - Smoke Detector 120V with Ba - 4/13/2006
I have a Firex AD model. While changing the battery, I dropped it and it broke. What kind of Firex s... ( read more )
Question about BRK - Smoke Alarm 120V with Battery - 4/22/2006
The low battery signal has been chirping every 30 seconds since early am - I have replaced the batte... ( read more )
Question about FireX - Smoke Detector 120V with Ba - 5/6/2006
We need information as to how to replace the 9v battery please.... ( read more )
FX1020 electric smoke alarm - 12/29/2005
How can I replace this smoke detector with a new one?... ( read more )
BRK - Smoke Alarm 120V with Battery Backup - 9120B - 12/10/2006
My smoke detectors seem to always be beeping. I read the back of the detector and it stated that the... ( read more )
BRK - Smoke Alarm 120V with Battery Backup - 9120B - 9/28/2006
i have eight of the alarms conted to gather correctly but every now and then they go off for a few s... ( read more )
1-800-239-2939