DLXAL20 F20

Latchbolt operated by knob/lever from either side except when
outside lever is made inoperative by push button rocker. Deadbolt
projected by key from outside is locked by thumbturn. Deadbolt thrown or retracted by rotation of thumbturn. When locked, key outside or knob/lever
inside retracts deadbolt and latchbolt simultaneously. Outside knob/lever remains locked until thumbturn is restored. Throwing deadbolt automatically
locks outside knob/lever. Auxiliary latch deadlocks latchbolt when door is closed.
Inside lever is always free for immediate egress