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Dogging Indicators

Von Duprin offers hex dogging and cylinder dogging visual indication for latch state verification.


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The Cylinder Dogging Security Indicator (CDSI) / Hex Dogging Security Indicator (HDSI) provides at-a-glance verification of a door’s status from inside the room. Visible “LOCKED” and “UNLOCKED” indicators show whether the device is dogged or undogged. This feature can be used with hex key (HDSI) or cylinder (CDSI) options on various device types: rim, mortise or vertical systems.

Designed for high traffic institutional environments, such as schools and hospitals, the visual verification reduces the time to tour a facility and ensure that each door is secure with at-a-glance visual verification. 




  Higher Education

  • Modular conversion kits for quickly upgrading existing devices
  • CDSI/HDSI dogging indicator with visual indication of whether the exit device is dogged or undogged
  • Available for 98/99 Series and 33A/35A Series panic devices only
  • Von Duprin devices with the HDSI options maintain ANSI BHMA A156.3 Grade 1, and UL305 certifications.
  • The HDSI is UL and cUL listed for use on panic exit hardware.
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Options & Accessories

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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.