The detailed styling of the Arlington is a welcome enhancement to your entry doors. The elegant scroll of the Lido complements a variety of homes and makes a stylish design statement. This single-cylinder handleset can be locked or unlocked by a key on the outside, or the turn button on the inside. SmartKey Re-key Technology allows you to control who has access to your home. Re key the lock yourself in seconds in 3 easy steps. Have you recently moved or had a child lose a key? It's time to re-key. SmartKey provides the highest level of residential security and features BumpGuard to protect against lock bumping.