Lisbon Square Entry Door Lock SmartKey W/ 6AL Latch and RCS Strike Iron Black Finish (Discontinued)

Keyed Entry Single Cylinder Function: This lever set is locked and unlocked from the exterior using a key and can be locked and unlocked from the interior using the push button located on the lever. Perfect for securing entrances, side doors, and anywhere else that needs a bit more security.BumpGuard: Lock bumping is an attack technique used to defeat conventional pin and tumbler locks. Kwikset's BumpGuard component utilizes a patented side locking bar which replaces the traditional pin and tumbler design providing protection against lock bumping.