Bring convenience to your home with this electronic keypad entry deadbolt and passage knob combo door lock by MiLocks. This keyless entry deadbolt and knob combo is a direct replacement for your traditional deadbolt and knob, and installs just as easy on both left handed doors and right handed doors 1 1/4"- 1 7/8" thick. You will discover how useful it is to simply share a code instead of sharing a key. Easy access for your kids coming home from school, no more need to take your keys with you on a run, no more making extra keys for others, you will wonder why you didn't switch to keyless entry sooner. In addition to adding individual users, you can also program a master code to multiple locks, a valuable feature for property management. The keypad glows in the dark which facilitates operation at night. It includes an adjustable latch with 2 different backset settings of 2 3/8" and 2 3/4" and features audible tones when locking, unlocking, and low battery warning. Operates on 4 "AA" batteries which are not included. This lock carries a 25 year mechanical warranty, 1 year electrical warranty, and a limited lifetime warranty on the finish.