What is a Delayed Egress Locking System?
A delayed egress system is a specialized door locking solution designed to delay exit for 15-30 seconds in cases of unauthorized egress attempts. These locks enhance security while maintaining compliance with fire safety regulations such as NFPA 101, IBC, and UL listings.
When activated, the system prevents immediate exit, allowing security personnel to respond. However, in emergencies such as fire or smoke detection, the lock automatically releases, ensuring compliance with life safety codes. Additionally, modern delayed egress solutions integrate seamlessly with existing access control systems, allowing remote monitoring and override capabilities, further enhancing security and operational efficiency.
Key Features of Delayed Egress Systems:
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15-30 second exit delay upon activation
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Automatic release in fire alarm or power failure
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Integrated alarms and visual alerts
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Compliant with NFPA 101, IBC, and ANSI/BHMA standards
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Commonly used in government buildings, retail stores, healthcare facilities, museums, and warehouses
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Compatible with access control systems for added security layers
The Evolution of Delayed Egress Systems
Before 1981, emergency exits were controlled only with latching exit devices and alarm systems. However, illegal chaining and padlocking of doors posed serious risks. Recognizing the need for a safer solution, NFPA 101 Life Safety Code (1981 edition) introduced the 15-second delayed egress rule.
Milestones in Delayed Egress Technology:
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1985: Security Door Controls (SDC) pioneered the first 15-second delayed egress door release system
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1995: SDC launched ExitCheck®, the first digital delayed egress lock with visual countdown and voice alerts
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2024: Today, delayed egress systems are an industry standard in security, ensuring both compliance and controlled access
Addressing Common Myths & Misapplications
Myth: Delayed Egress Blocks Emergency Exits
Reality: All code-compliant delayed egress locks are fail-safe and automatically release in the event of a fire alarm, smoke detection, or power failure.
Misapplication: Use in Active Shooter Scenarios
Reality: Delayed egress systems are not meant for active shooter incidents. Instead, lockdown solutions should be used to create secured barriers while allowing emergency responder access.
Where Are Delayed Egress Locks Used?
Pedestrian Traffic Control & Theft Prevention
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Retail Stores & Malls: Reduces shoplifting and prevents unauthorized exits
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Airports & Government Buildings: Controls high-security exit points
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Museums & Art Galleries: Protects valuable exhibits
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Warehouses & Distribution Centers: Prevents unauthorized access to inventory areas
Healthcare & Assisted Living Applications
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Hospitals & Psychiatric Facilities: Prevents patients from wandering
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Nursing Homes & Infant Nurseries: Helps prevent infant abduction and patient elopement
Compliance & Regulatory Standards
To ensure safety and legality, all delayed egress solutions must comply with fire and building codes:
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NFPA 101 (Life Safety Code): Requires 15-second delay (30 seconds upon AHJ approval) and automatic unlocking during emergencies
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International Building Code (IBC) & International Fire Code (IFC): Outlines requirements for power loss release and manual override
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ANSI/BHMA Standards: Defines electronic locking and egress safety requirements
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UL 294 & UL 1034 Listings: Ensures fire-rated exit hardware compliance
Best Delayed Egress Solutions by Security Door Controls (SDC)
Integrated Delayed Egress Locks
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1511S & 1511T Series – 1650 lbs holding force, digital countdown display, and verbal alerts
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1581S Mini Series – Compact, cost-effective with 650 lbs holding force
Component-Based Delayed Egress Systems
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101-DE Controller – Compatible with magnetic locks & exit devices
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101-KDE Controller – Offers reset and bypass functions
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S6000-DES & S6300-DES – Motorized delayed egress exit devices
Conclusion
Delayed egress systems offer the perfect balance between security and life safety compliance. By integrating code-compliant solutions, facility managers can enhance security, prevent theft, and safeguard occupants while meeting regulatory standards. With new advancements in smart locking mechanisms and access control integration, these systems continue to evolve, offering greater flexibility and remote management capabilities.
Explore the Best Delayed Egress Solutions Today!
Discover Security Door Controls’ (SDC) innovative egress solutions to enhance your building’s security. Visit SDC Security to learn more!
