We purchased my safe with the more basic 4-digit lock and I wasn’t able to get it to work, ultimately locking myself out prior to installation. This lock is so much better! I would strongly recommend it instead of the more basic locks ideally upon initial safe purchase, but if you’re unhappy with one of the basic ones you already have, this is the way to go.
Removal of the original lock and replacing with this one was straightforward with the included directions and setting the combination was easy.