Yale Locks & Hardware Cylindrical Entry Lock, AU 4707LN 626

Entry Lock
• For entrance, general home or office doors.
• Deadlocking latchbolt.
• Either lever operates latchbolt (except when outside lever is locked from inside).*
• Pushing turn button in inside lever locks outside lever. (Automatically releases when inside lever is turned or key is rotated in locked outside lever.)
• Outside lever may be retained in locked position by pushing and rotating turn button 90° clockwise to a horizontal position; not released until turn button is manually returned to the vertical position.
• Latchbolt is operated by key in outside lever or by rotating inside lever.
• Inside lever always active.