Smart Code Deadbolt, Polished Brass Finish, Keyless Entry Deadbolt With Smart Key Re-Keying, Fits Standard Deadbolt Door Prep, Touch Pad Accept Two 4-8 Digit Entry Codes, No Wiring Necessary, Requires 4 “AA” Batteries Not Included, 2-Keys For Back Up Use, Installs With Phillips Screw Driver, Lifetime Finish Warranty, Lifetime Mechanical Warranty, 1 Year Electronic Warranty.