PLEASE read these and it will save your a lot of time later:
1). The most common error in installation is battery related. Please use FOUR: two in top compartment, and two in bottom compartment, brand new batteries, and make sure they are placed correctly, according to "+/-" markings in the battery box.
2). To avoid locking yourself out, please, Please and PLEASE: TEST >>> WRITE-DOWN your own master code
BEFORE installing the lock (physically) on the door!
3). The most common error (mis-understanding / mis-operation): To unlock, after pressing your codes, you need to TURN the outside (keypad) knob WHILE it is beeping (within three-second after pressing a correct code) - this is NOT a deadbolt!