Security Door Controls Blog

SDC pioneered the revolutionary delayed egress locking category to the industry in 1985 before patenting and launching ExitCheck® 1511S series in 1995 – the world’s first delayed egress lock to integrate a visual digital display, verbal countdown and alarm tone, alternating verbal message and door release indicator. Since then, SDC has developed the premier line of delayed egress solutions offering the most choices, flexibility and customization available in the market.

The Integrator’s Choice Since 1995

SDC pioneered the revolutionary delayed egress locking category in 1985. We patented the ExitCheck® 1511S series in 1995  – the first delayed egress lock to integrate a visual digital display, verbal countdown and alarm tone, alternating verbal message and door release indicator.

Later, we added the ExitCheck® 1511T series for double doors and the 1581S mini delayed egress for smaller security needs and budgets. With the deepest line of complementary accessories, SDC provides the most comprehensive delayed egress solutions in the industry. Explore the importance of delayed egress devices in ensuring security and compliance in various settings.

An incident earlier this year highlights misconceptions about using or not using Delayed Egress on emergency exit doors.

On New Year’s Day at Salt Lake City International Airport, a Utah man died after he breached double doors at an airport emergency exit stairway in the secure area of the passenger terminal, ran across the tarmac, and crawled into the engine of a plane awaiting deicing. His family said he had a history of mental illness and suspect he was experiencing a manic episode.

Prior to his gaining access to the runway through the stairway double doors, he was thwarted in several attempts to gain access to the jetway at a gate door secured by an SDC EMLock® paired with an exit bar and door trim. It should be noted that SDC’s electrified hardware solutions are used on every jetway gate door at this airport.

Proven Delayed Egress Innovation...

See why our proven Delayed Egress solutions have led the industry since 1995 with the most choices and customization available. Also, learn why SDC has been the premier manufacturer of popular electrified access control hardware like bolt locks, strikes, EMLocks® and egress devices - all Designed, Engineered and Built in America since 1972, while most of our larger competitors manufacture overseas.

See these selected 4th quarter highlights from our robust toolbox of over 35,000 access + egress control components...

... all designed, engineered and built in America while most of our larger competitors manufacture overseas.

See these selected 3rd quarter highlights from our robust toolbox of over 35,000 access + egress control components...

... all designed, engineered and built in America while most of our larger competitors manufacture overseas.

This post is the third in a series to address concerns expressed on our social media platforms regarding Delayed Egress Systems that indicated misconceptions about their proper application in Security, and Fire and Life Safety applications. Here’s some information and examples of common applications of Delayed Egress Systems.

Mini Integrated Delayed Egress Locks

SDC’s 1581S series mini delayed egress locks are designed to meet the needs of long term care and commercial facilities that require a smaller, less obtrusive, and less expensive delayed egress lock that is better suited for minimum security needs.

The 1581S series delays egress through perimeter exit doors for 15 or 30 seconds, alerts security and personnel to unauthorized egress, and is compatible with access controls and patient wandering and infant tracking systems.

This post is the second in a series to address concerns expressed on our social media platforms regarding Delayed Egress Systems that indicated misconceptions about their proper application in Security, and Fire and Life Safety applications.

Recently, some readers weighed in with comments on our social media platforms regarding Delayed Egress Systems that indicated misconceptions about their proper application in Security, and Fire and Life Safety applications. This post is the first in a series to address concerns expressed and to provide clarity and resources regarding Delayed Egress systems.