For a service fee, we will pre-set your new Kwikset SmartCode lock user codes for you. When you have little patience for reading a manual, or would simply like your new locks to arrive ready to use right out of the box, our personalized code setting service is hard to beat. For Kwikset Electronic Locks Includes Free Energizer Batteries (4) Pack Kwikset Electronic locks require 4 AA batteries in order to operate and are necessary for us to program them. Those 4 AA batteries do not come in the original manufacturer’s packaging. Your Kwikset SmartCode locks support up to 4 user codes, which you may set to a sequence unique to you. Numbers to Choose from: 0-9Length of Code: 4-8 digits You can use the same number more than once. Once you place your order, simply email us the user code(s) you would like us to set your lock(s) to [email protected] IMPORTANTFor quantity, please enter how many codes you would like programmed. For example, if you are ordering 2 locks, and would like 2 of the 4-digit user codes sequenced per lock, enter in “4” for your QTY.