Kwikset SmartCode Deadbolt. Upgrade to a more convenient, more controllable keyless entry deadbolt with SmartCode™ Signature Series. With your own personal code, you can enter your home with just a few simple pushes of a button and lock it with just one. You also get more control over who has access to your home. Just assign a temporary code to whoever needs one and delete it when you see fit. Now you can totally eliminate the need for keys. SmartCode is easy to install, program and use and operates on 4 AA batteries. SmartCode complements any Kwikset knob, lever or handleset. Lock your door with the touch of a button. Customizable access codes for increased security. Back-lit keybad for increased visibility. Customized automatic door locking after 30 seconds for peace of mind. Installs in minutes with just a screw driver – no hard wiring needed. Fits standard doors (1 3/8″ – 1 3/4″) – no screw holes required. Replaces any deadbolt for keyless entry convenience. Patented side locking bar technology offers improved security by protecting against lock bumping, an attack technique used to defeat conventional pin & tumbler locks. Lifetime mechanical and finish warranty. 1 year electronics warranty.