Lori Brown, Senior Product Manager, ASSA ABLOY Opening Solutions outlines what you need to know about Motorized Electric Latch Retraction in access control.

Door security and access control

In recent years, door security has shifted dramatically from traditional mechanical locks to advanced electromechanical systems that prioritize both safety and the ability to move freely within a space.

This evolution reflects a growing need for inclusive environments, especially in commercial buildings and public institutions where adherence to standards like the Americans with Disabilities Act (ADA) is essential.

Motorized Electric Latch Retraction

Motorized Electric Latch Retraction (MELR) technology stands out as a prime example of this shift by combining robust security with effortless access.

Powered by a motor, MELR not only protects spaces from unauthorized entry but also ensures that door access control systems are accessible to everyone.

With the ability to retract a latch in just half a second and a hold back option that prevents overheating even with excessive use, MELR technology offers unparalleled convenience and reliability for access control.

Enhancing accessibility and efficiency in door security

When combined with an automatic door opener, MELR creates a fully touchless access control solution, providing enhanced accessibility and convenience.

This technology does not unlock the trim but simply employs an electric motor to retract the latch bolt, seamlessly integrating with automated building systems to enhance efficiency for occupants of the building.

MELR offers significant advantages including heightened security by controlling entry points more effectively, exceptional durability suitable for high-traffic areas and strict compliance with safety and accessibility regulations.

These systems are not only quick but also energy efficient, which helps reduce operating costs while supporting environmental sustainability efforts.

Key technical specifications include rapid functionality, low power requirements and robust compliance certifications, including ANSI/BHMA for durability and UL/cUL for fire safety.

This blend of features makes MELR a critical component in modern architectural design and access control, where the focus is on creating safe, accessible and efficient environments.

The future of inclusive and secure building design

Security professionals constantly seek solutions that balance convenience with robust security measures. MELR functions address this access control need.

In emergencies, MELR’s ability to retract the latch even with applied pressures of 50 pounds ensures that doors can remain operable in challenging conditions.

Additionally, its fire rating for three-hour doors provides an added layer of safety, ensuring that doors can function as intended in case of fire.

MELR functions represent a significant advancement, offering security professionals a valuable tool for enhanced emergency preparedness, access control and overall building security.

Enhanced building functionality and sustainability

MELR functions offer several operational advantages that significantly enhance building functionality and sustainability.

The quick latch bolt retraction feature is ideal for high-traffic areas, allowing doors to open and close swiftly, which minimizes bottlenecks and facilitates smooth movement of people.

Additionally, these systems operate quietly, making them suitable for environments such as libraries, offices and hospitals where noise minimization is crucial.

Their efficient operation not only reduces noise pollution but also conserves energy, contributing to more sustainable building practices.

The blend of speed, quiet operation and energy efficiency make MELR systems a preferred choice in various settings, aligning with modern demands for functionality and environmental responsibility.

Seamless integration and long-term performance of MELR

MELR systems are versatile, integrating seamlessly with various door types and existing security frameworks, making them perfect for both new construction and retrofitting into existing buildings.

They are compatible with a wide range of door styles and access control systems, as well as our full range of decorative door hardware.

This allows for a cohesive and aesthetically pleasing look while maintaining a high level of security.

Enhancing security one door at a time

Modern facilities require robust security solutions that prioritize both safety and convenience.

MELRaddresses this need by seamlessly integrating advanced technology with user-friendly design.

These locks can not only ensure quick and quiet operation, but also boast compatibility with various door types, making them a versatile addition to any building’s infrastructure.

About the author

Lori Brown is a Senior Product Manager in the mechanical locks category of ASSA ABLOY’s Access and Door Control Group, including ASSA ABLOY ACCENTRA, Corbin Russwin and SARGENT brands.

Lori specializes in product development and marketing for commercial mortise and bored locks.

This article was originally published in the October edition of Security Journal Americas. To read your FREE digital edition, click here.