SDC 491-GL4 Replacement Glass Rods for 491 Emergency Break Glass Station, 4-Pack

Keep your emergency response system ready with the Security Door Controls SDC 491-GL4 replacement glass rods — a straightforward, reliable solution for the 491 Emergency Break Glass Station. Designed as a direct fit for the SDC 491 break station, this 4-pack of glass rods reduces maintenance trips and ensures teams can replace broken rods quickly to maintain continuous protection. The distinctive blue housing prevents confusion with red fire alarm stations, helping staff and security personnel follow correct procedures under stress. Constructed of glass for a clear, unambiguous activation and compatible with 12V or 24V DC systems, these rods integrate seamlessly into existing monitoring, access control and alarm circuits. The visible activation instructions and built-in siren response on the host station improve situational awareness for security and surveillance teams during lockdowns or emergency events. Ideal for schools, healthcare facilities, commercial buildings and multi-site security programs, the SDC 491-GL4 helps you maintain code-compliant break stations and faster incident response. Order this 4-pack to streamline inventory and keep your emergency & lockdown buttons functioning when it matters most.

• Ensures fast, correct activation: blue glass rods clearly distinguish break stations from red fire alarms to reduce mistakes in emergencies
• Direct replacement for SDC 491: simple swap-in compatibility minimizes downtime and maintenance labor
• Pack of four reduces reorder frequency and supports multi-site installs or staged replacements
• Glass material delivers unmistakable break activation with clear visual and tactile feedback for first responders and staff
• Works with standard 12V or 24V control circuits and integrated alarm systems for reliable monitoring and access control integration