Sdc 491ADI Break Glass Release Station with Siren

Product Description

The SDC - SECURITY DOOR CONTROLS 491ADI is a break glass release station with an integrated siren, designed for use in access control and emergency egress systems. When the glass element is struck or broken, the device triggers an audible siren alert while simultaneously releasing a controlled door or gate on the connected access circuit. This unit is intended for installation by licensed security and low-voltage electricians working on commercial or institutional access control projects where code-compliant manual release points are required.

The 491ADI is suited for commercial buildings, schools, healthcare facilities, and other occupancies where a manual break glass pull station is required as part of an emergency egress or access control system. It provides a visible, dedicated release point at controlled entry and exit locations. Installation is typically performed alongside electric locking hardware and access control panels as part of a broader door security system.

Key Features

• Integrated siren provides immediate audible alert upon glass break activation
• Manual break glass operation for reliable emergency release without electrical input required at the station
• Designed for use as an access pull station in controlled door and gate applications
• Single-unit quantity per package for straightforward procurement and installation

Compatibility

Designed as an OEM-style access pull station for commercial access control and emergency egress systems requiring a manual break glass release point with siren notification.

Installation Notes

Installation should be performed by a licensed low-voltage electrician or security system technician in accordance with applicable local codes and NFPA 101 life safety requirements. Disconnect and de-energize all connected access control circuits before wiring or mounting the station. Mount at a height and location that meets local accessibility and egress code requirements. Do not reinstall a previously activated unit without replacing the break glass element per the manufacturer service instructions.