Convenient for Keyless Entry: This digital lock provides 1 master code and 9 access codes. And you can set the password up to 15 digits, suitable for office, house and apartment. Enhanced Security: Designed with encryption function, this doorknob can avoid the code being peeping. Universal Fit: It fits most standard doors and the free rotating knob make it fit both left and right handed doors. With adjustable latch, it fits 2-3/8-Inch (60mm) or 2-3/4-Inch (70mm) backset. Easy to install: Easily installs in minutes with just a screwdriver even you are not professional. The keypad is back-light that enable you to enter codes more convenient even in darkness. Multi-Functions: The electronic lock is waterproof and can be used in both indoor and outdoor. Comes with an emergency power supply in case that the batteries run out. Features: About Warranty: 6 months warranty. 30 days free return and money back guarantee. 24 customer service response. About password: - There are ten passwords, including 1 master password, and 9 sub passwords, which are easy to manage. - Change Master password and Sub passwords freely. - Master password can be used to add or delete any sub password - The fired user can be deleted individually by Master password, without any affect on the normal application of the lock by the other users - One-Key opening function(Passage Mode) :Press any digital key to open the lock - Outer-emergent power supply opening function. - Encryption function , for confusing any spies watching as the User code being entered. - Resetting function. When forget the password, or something unusual, after resetting, it can be normal. About Battery: - Low battery alarming function - Easy to replace batteries , without affect the information of passwords. - Low battery waring with emergency power jump override Advantages: - Anti spy code encryption - Suitable for indoor and outdoor - No external wiring required - Free rotating handle is adopted to avoid unlock by violence -...