Keyless Digital Electronic Entry Security Safety Door Lock Locker (Satin Nickel 3 Pack)

Multi-Functions: The electronic lock is waterproof. Perfects for your entery door, front door entry, garage, utility room door, back door, bedroom door. And we recommend the inside door knob is used in indoor. It comes with an emergency power supply in case that the batteries run out.
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. Note: Please make sure to install 2 batteries on each side of the battery box. 4 batteries are required.
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.