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What are the guard keys and prisoner keys from the L9485 XL11-557 Prison function lock?

The L9485 XL11-557 is a prison function lock which utilizes a faculty restroom/hotel function cylinder.   

  • The prisoner key is the normal change key/operating key.  It functions by retracting the latchbolt when the deadbolt is not thrown.  This key is inoperative when the deadbolt is thrown.
  • The guard key is the emergency key (notched for warding).  It  functions by throwing and retracting the deadbolt.  

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