Simplex Mechanical Pushbutton Locks eliminate problems and costs associated with issuing, controlling, and collecting keys and cards.The mechanical pushbutton lock provides fully mechanical access control while allowing free egress at all times by interior thumb turn. Deadbolt models must be manually relocked. Deadlocking spring latch models automatically relock each time the door closes. This fully mechanical lock eliminates the material and labor expense of battery replacements has a single access code and is programmed via the keypad without removing the lock from the door.The KABA Simplex 919 Digital Lock with Deadlatch is a fully mechanical pushbutton lock with deadbolt/springlatch. It has a single access code and is highly weather resistant. This lock eliminates problems and costs associated with issuing, controlling, and collecting keys and cards. Single access code, one easy to manage code for all users, the lock is easily programmed without removing lock from the door.For 44-54mm thick doors.Single Access CodeFactory-handed for left-hand doors; easily field reversibleCode Changed without Removing LockHighly Weather ResistantSatin ChromeCost-effective access control solutionEasily installs on wood or metal doors3-year warranty