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The ALARM CONTROLS CORPORATION SMB-3D is a narrow surface mount box finished in dark bronze, designed for door alarm and access control applications. This enclosure provides a clean, low-profile housing for door alarm components in installations where a recessed box is not practical or permitted. It mounts directly to the door frame or wall surface, keeping wiring and hardware contained and protected. Electricians and access control technicians typically install this type of enclosure as part of a door monitoring or egress alarm system in commercial and institutional settings.
The SMB-3D is suited for surface mount installations where space is limited along door frames or narrow mullions. Its dark bronze finish makes it appropriate for decorative or upscale interior environments where hardware visibility matters. This enclosure is commonly installed alongside door alarm contacts, exit devices, or related low-voltage hardware in commercial buildings, schools, and healthcare facilities.
Designed as an OEM-style surface mount enclosure for door alarm and access control systems requiring a narrow-profile box housing.
Installation is typically performed by a licensed electrician or access control technician. De-energize all low-voltage circuits at the panel before beginning work. Secure the enclosure to the mounting surface using fasteners appropriate for the substrate material. Follow all applicable NEC requirements for low-voltage wiring and enclosure mounting.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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