KEYPAD DOOR LOCK: Allow Up to 30 Unique User Codes and 1 Master Code. Also allows One-Time User Code to provide visitor entry once and restrict future access, for Example a Builder Code MULITPLE ENTRY METHODS: Enter Using the Tradtional Key, or by using your assigned security code on the Keypad Door Lock PEACE OF MIND: Automatic Lock Function automatically has Keypad Locked after 10 to 99 seconds of being idle ADDED SAFETY: Keypad Door Lock Auto-Stop Function Suspends Operation with 5 Incorrect Attempts, Does not allow criminals to continue to try codes on keypad door lock EASY INSTALLATION: Installs Easily with Screw Driver. Fits standard 1 and 3/8 inch to 2 Inch Door, Fits any Standard Door Size