Mul-T-lock ClassicPro with 3 keys and keycode card. The Mul-T-Lock MTL?400 ClassicProoffers best in class locking solution while delivering exceptional value. You can rely on Mul-T-Lock?s world-renowned experience and expertise to ensure your home, assets and family are safe and secure. Mul-T-Lock combines its advanced telescopic pining technology with a special patented cut to meet higher security standards for commercial properties and private homes. MTL?400 provides enhanced security, reliable key copy protection, high-grade components, and improved capabilities at an affordable price. MTL?400 Solution Benefits · Key copy control technology - Giving you another layer of protection, the MTL?400 key card method requires authorized Mul-T-Lock locksmiths to present the unique magnetic card for additional keys · Higher resistance to break-ins, intrusions by bumping, drilling and picking · Peace of mind - Reinforces your need to protect against key duplication · Convenient - Easily identify keys with a wide range of key-head colors · Environmentally friendly MTL?400 Solution Features · Comprehensive Key and Cylinder Options - to address a variety of needs : o Master Key Systems - assign various levels of access to a user's key . o Keyed Different - access each door with a different key . o One Key House (Keyed Alike) - Users are able to upgrade their home security to a single key solution, enabling a 'One Key House'. This feature allows homeowners to open any access point ? from mailbox to garage door and up to the front door ? with a single key. o 3-in-1 Keying - instantly change a lock's combination up to 2 times by simply turning a key . o Construction Keying - provides access to multiple doors with a common key, then instantly switches to unique combinations when necessary, rendering the common key useless .