Kwikset 909 SmartCode Electronic Deadbolt featuring SmartKey in Lifetime Polished Brass One touch locking with a motorized deadbolt & back-lit keypad for increased visibility. Eight customizable access codes - plus a master code option. Latch has adjustable backset 2-3/8 to 2-3/4" to fit all standard door preparations ANSI/BHMA grade 2 certified & lifetime warranty on mechanics and finish; 1 year on electronics. Please see Installation Manual and User Manual under Technical Specification section for additional information. Please see Installation Manual and User Manual under Technical Specification section for additional information.