Allegion
The Von Duprin Classroom Security Indicator provides an at-a-glance verification of the locked/unlocked status of a classroom door from inside a room. The option can be ordered as a new product or as a retrofit conversion kit to an existing 98/99 device. The Unlocked indicator shows a 1/2-by-1/2-inch metal flag at the top of the device head; the indicator in a Locked state has no flag present. This feature can be used with Hex key (HDSI) or Cylinder dogging (CDSI) options on various device types — rim, mortise, and vertical systems.
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