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Quiet Electric Latch Retraction (QEL)

The QEL gives off limited operational noise while providing electronic control of an exit device.  


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The QEL provides electronic control of an exit device where limited operational noise is desired. It is Von Duprin’s choice solution for hospitals, libraries, museums, theaters and any other place where ambient noise is possibly disruptive. 

The QEL can retract a latchbolt momentarily or on an extended, scheduled basis via access control system. This option is available to be configured on Von Duprin 98/99, 94/95, 33A/35A, and 22 Series panic and fire-rated exit devices; or it can be ordered as a modular kit to retrofit existing devices.


  Electronic Access Control



  • Standard 2 amp power supply, enabling longer wire runs from the power source
  • QEL board has electronic LEDs, providing visual indication of potential errors 
  • Auto-adjust latch retraction
  • Vandal resistant

Von Duprin devices will maintain the following: 

  • ANSI BHMA A156.3 Grade 1, UL305, and UL10C certifications.
  • The QEL is UL and cUL listed for use on panic exit hardware and fire exit hardware.
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Options & Accessories 

For frequently asked questions, educational resources and technical product materials, visit the Options & Accessories 101 page.

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Did You Know?

Von Duprin has hundreds of possible configurations for any type of opening, giving you flexible and modular options.

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As part of Allegion’s family of pioneering brands, Von Duprin benefits from the strength, efficiencies, resources, and integration from a global power. In turn, we pass those advantages on to you.

Allegion helps keep people safe and secure where they live, work and visit. With more than 30 brands sold worldwide, we specialize in security around the doorway and beyond. It’s the power of one.