The Key Control Deadbolt is perfect for multi-family dwellings, student housing, assisted living & rental properties. Kwikset’s Key Control Deadbolt, featuring SmartKey Re-key Technology, is a revolutionary cost and time-saving alternative to master keying. With the first and only two-cylinder Key Control Deadbolt, either cylinder can be re-keyed in seconds, without removing the lock from the door. Retain your one-key access to all units and gain more flexible key management, all while saving time and money. This single cylinder deadbolt is operated by a key on the outside or a thumb turn on the inside. The crisp, clean appearance of the Satin Nickel finish adds to the overall look of the product and brings a modern feel.