Find more information about your First Alert or BRK product, including manuals, tutorials, and more.

View and Download BRK electronic 4120 AC user manual online. BRK Electronics SMOKE ALARMS USER'S MANUAL 4120SB, 4120B, 4120 AC. 4120 AC smoke alarm pdf manual download. Also for: 4120sb, 4120sab, 4120b, 4120ab, 4120.

This unit is designed to be compatible with: ® BRK Electronics Smoke Alarms 100S, 2002RAC, 4120B, 4120SB, 4919, 5919, 5919TH, 86RAC; ® BRK Electronics Heat Alarm HD6135F; and ® First Alert Smoke Alarms SA4120B, SA4121B, SA4919B, SA86B, SA100B.

BRK 4120B Smoke Alarm AC Powered with Battery Back-up. Designed for the fastest possible installation! If AC power fails, the battery back-up keeps the smoke alarm working. Up to 11 additional BRK smoke detectors and 6 compatible devices such as bell, repeaters, or switches. Share your knowledge of this product. Be the first to write a review »

Find more information about your First Alert or BRK product, including manuals, tutorials, and more.

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Manuals and User Guides for BRK electronic 4120SB. We have 2 BRK electronic 4120SB manuals available for free PDF download: User Manual

interconnect wire carries both smoke and CO alarm signals. Single Button Test/Silence eliminates confusion. Depending on what. in silence and clearing the Latching feature. alarm condition has subsided. rotation range to allow for perfect alignment. Dust Cover is included to keep the alarm clean during construction.

Brk 4120sb-gfd Smoke Alarm Ac 120vBrk 4120sb Use 394185smoke Detector 120v With 9v Battery And Hush Button. Also known as: 029054512017, 4120SB-GFD.

The BRK & First Alert 4120 was introduced in 1998. It was replaced by the BRK 9120 in 2004 [3].