ND85 Faculty restroom lock

Lever with conventional indicator cylinder outside; push button in lever inside; deadlatch
Entrance by key only; outside lever always fixed; latch retracted by inside lever
Push button on inside lever activates a locking pin that extends from the cylinder face to prohibit use of operating keys and indicate that the room is in use
Turning inside lever or closing door releases the locking pin and push button to allow normal use of operating keys
Emergency unlock: use of an emergency key (sold separate) is required to override the locking pin and unlock from the outside when push button is activated
Inside lever always free for immediate egress