SDC 491 Emergency Break Glass Station, 30V DC, 10A, Blue

When seconds matter, the Security Door Controls SDC 491 Emergency Break Glass Station delivers fast, unmistakable door release for fail-safe electric locks. Designed as an emergency door release station, the SDC 491 combines a blue, anti-confusion housing with clear activation instructions and an integrated siren to ensure responders can quickly identify and activate the device without triggering fire alarm confusion. Rated for 30V DC and 10A, the unit provides a dependable main contact (SPDT) for lock release and an auxiliary contact for CCTV, remote monitoring or alarm system annunciation. Its robust break‑glass activation demands deliberate action—helping reduce accidental trips compared to pull stations—while supporting approval for many electric locking systems. Surface-mount and gang box mounting options make installation straightforward for security integrators and facility managers working on access control, lockdown or perimeter security projects. Add the SDC 491 to your surveillance and monitoring strategy to simplify emergency egress and system integration—order now or contact our team for specification and installation support.

• Provides immediate, reliable emergency door release to protect occupants and maintain perimeter security
• Blue housing and clear instructions reduce confusion with fire alarms, improving compliance and response time
• Built-in siren and easy-to-monitor auxiliary contact support alarm annunciation, CCTV integration and remote monitoring
• Handles standard access control loads (30V DC, 10A) for dependable operation with fail-safe electric locks
• Surface-mount/single- or double-gang install options simplify retrofit and new‑build integration into access control systems