Sdc - Security Door Controls 400NU-SN Narrow Plate Siren

Product Description

The SDC - SECURITY DOOR CONTROLS 400NU-SN is a narrow plate unit with integrated siren, designed for use in access control and door security applications. This hardware accessory mounts to door frames or narrow stile doors where standard-width lock plates are not an option. The integrated siren provides an audible alert function, adding a layer of notification to door monitoring or locking systems. Installation is handled by locksmiths, access control technicians, or commercial door hardware specialists working on light commercial or institutional entry points.

The 400NU-SN fits narrow stile door configurations commonly found in commercial storefronts, office buildings, and institutional facilities. It is suited for new installations and retrofit projects where an existing narrow plate lock application requires audible alarm capability. The unit ships as a single piece and is intended for use as part of a broader access control or egress management system.

Key Features

• Narrow plate form factor accommodates slim stile door profiles
• Integrated siren provides audible alert for door status or alarm events
• Designed as a lock accessory for access control and door security systems
• Single-unit construction simplifies installation in narrow door applications

Compatibility

Designed as an OEM-style lock accessory for narrow plate door hardware applications in commercial access control systems.

Installation Notes

Installation should be performed by a licensed locksmith or qualified access control technician. Disconnect power to any connected locking or alarm circuits before beginning work. Follow applicable local building codes and fire egress requirements when installing hardware on exit or entry doors. Consult the manufacturer datasheet for wiring and mounting guidance specific to this unit.