System Sensor SBBGRL — Compact Wall Surface-Mount Back Box (Red)
The System Sensor SBBGRL is a compact surface-mount back box accessory designed for use with System Sensor L-Series wall-mount notification appliances such as horns, strobes, and horn-strobes. It provides a secure, hard-surface mounting solution when recessed mounting isn’t feasible — for example, on concrete, brick, or finished drywall surfaces.
Key Features & Benefits
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Surface-Mount Solution: Allows wall devices to be mounted flush on solid surfaces where an electrical box is not easily accessible.
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Compact Footprint: Sized for compact L-Series notification devices, minimizing visual impact while housing the device securely.
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Durable Construction: Designed for indoor use, it includes a grounding plate with a screw and threaded knockouts for conduit entry to aid wiring and grounding.
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Color – Red: Matches typical life-safety installations with a red finish for fire alarm devices.
Typical Applications
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Used in commercial, institutional, and industrial buildings to surface-mount notification appliances on solid masonry or other non-backbox surfaces.
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Ideal for retrofit and renovation projects where flush mounting isn’t practical.



