The Von Duprin 900416-00 is the OEM configuration package for CDSI and HDSI exit devices. It supports both the Cylinder Dogging Security Indicator (CDSI) and the Hex Dogging Security Indicator (HDSI) options on Von Duprin panic hardware. This configuration package provides the components needed to set up or reconfigure a CDSI or HDSI equipped device correctly, and is listed in the Von Duprin price book as the standard configuration item for this family of dogging indicator devices.

What Von Duprin CDSI and HDSI Mean

Dogging is the feature on an exit device that allows the push pad to be held in the depressed position, retracting the latch bolt so the door operates as a simple push/pull door without the latch engaging. Standard Von Duprin devices use a 5/32-inch hex key for dogging. The CDSI and HDSI options add a visual security indicator to the dogging mechanism so building staff can confirm from inside the room whether the device is currently dogged (unlocked) or undogged (latched) without having to physically test the push bar.

The CDSI (Cylinder Dogging Security Indicator) pairs the visual indicator with cylinder dogging, replacing the standard hex key with a key cylinder for both dogging and undogging. A standard rim cylinder controls the function, making it accessible to authorized personnel with a key but not to general occupants. The HDSI (Hex Dogging Security Indicator) keeps the standard hex key dogging but adds the same visual indicator to show dogged status.

Both options use a 1/2-inch by 1/2-inch metal flag at the top of the device head to signal status. When the indicator shows the flag, the device is unlocked (dogged). When no flag is visible, the device is locked (latch bolt engaged). This at-a-glance visual works from across a hallway, reducing the need for staff to touch or test each door during security rounds.

Where Von Duprin CDSI Gets Specified

CDSI and HDSI are specified across schools, universities, hospitals, and government facilities where facilities staff need a fast, non-disruptive way to verify door status. Classroom lockdown scenarios are a common application: a teacher can dog the device from inside with the cylinder, see the indicator confirm locked status, and staff touring the building can verify from outside the door that the room is secured without knocking or testing the hardware.

Both CDSI and HDSI are available for the 98/99 Series and 33A/35A Series panic devices across rim, mortise, surface vertical rod, and concealed vertical rod device types. Neither option is compatible with fire-rated device configurations. They are recommended for use with specific outside trim functions including DT, K-DT, L-DT, EO, NL, K-NL, L-NL, and NL-OP.

Von Duprin CDSI Kit Configurations and Retrofit Options

For facilities upgrading existing devices, Von Duprin offers CDSI and HDSI as conversion kits. The 98 CDSI conversion kit is available in 3-foot (040080) and 4-foot (040081) versions. The 99 CDSI conversion kit covers 3-foot (040084) and 040085 for 4-foot devices. HDSI conversion kits for the 98 and 99 Series follow the same device-length numbering pattern. For 33A/35A Series, separate CDSI and HDSI conversion kits cover both 3-foot and 4-foot lengths.

Modular conversion kits allow existing installed devices to be upgraded in the field without replacing the full unit. The 900416-00 configuration package is the parts-level item that supports proper setup of CDSI/HDSI devices. For the full Von Duprin dogging indicator catalog and related exit device components, SecurityParts stocks OEM parts for all major 98/99 Series and 33A/35A configurations. Free shipping on orders over $450.