SDC 491 490-Series Break Glass Emergency Exit with Siren, Single Gang, Blue

For facility managers and security integrators who need reliable manual emergency egress, the Security Door Controls SDC 491 490-Series Break Glass Emergency Exit delivers immediate unlocking of fail-safe doors while providing audible local annunciation. This Break Glass Station is purpose-built for emergency door release applications and helps maintain code and system approvals for electric locking systems. The blue single-gang housing reduces confusion with red fire alarms and provides clear activation instructions for trained personnel. The unit’s integrated siren enhances local monitoring and incident response, while 12V/24V DC compatibility simplifies integration into existing access control and security systems. Constructed of durable ABS, the SDC 491 withstands everyday use and harsh environments common to perimeter and interior door installations. Ideal for schools, healthcare, retail, and corporate campuses, this break glass station supports your broader security and surveillance strategy by enabling controlled, auditable emergency exits. Add the SDC 491 to your access control plan to improve emergency response and compliance—contact your distributor or order today to upgrade your emergency release points.

• Immediate fail-safe door release on activation, ensuring fast egress and minimizing downtime
• Built-in siren for local annunciation and improved situational awareness during incidents
• Blue housing reduces confusion with fire alarm stations and helps meet site-specific safety protocols
• Single-gang, low-profile ABS design for straightforward retrofit or new-install access control applications
• Compatible with 12V or 24V DC systems for easy integration into existing security and access control networks