Changes to the Falcon W501 latch offering were made on 2/13/2012.
Prior to 2/13/2012: The W501 entry lock was supplied with a restoring latch which causes the button to pop and unlock the outside lever when the door is shut.
Post 2/13/2012: The W501 began shipping with a non-restoring latch. This will allow the customer to depress the inside button and shut the door without the outside lever unlocking.
New W501 Entry Lock Description (ANSI F82):
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