If not operated, the plunger of the locking plungers GN 816 protrudes. To retract, move against the spring force and hold in the end position by turning by 90°.
The shape of the cam curve secures the plunger against accidental operation.
When operating the button (Type AR/ARK), to visible red covering sleeve indicates the locing status: Indexing pin does not protrude.
For the execution with operation with key (Type B / BK) a key is required to move the plunger. In this execution, a cover sleeve provides additional security and safety from unauthorized removal of the locking plunger. The cover sleeve also provides additional protection against malfunction caused by dirt.