Medeco M4 cylinders from Calgary Lock & Safe are UL 437 Listed with solid brass construction and hardened-steel inserts to thwart drilling attacks. In addition to top pins that lift and rotate, M4’s design includes 4 Side Pins made up of 3 Finger Pins and 1 Lift Pin. The Lift Pin is activated by contact with the Shuttle Pin movable element in the key, providing a high level of pick resistance. The Finger Pins work with Secondary Side cuts on the key to provide an increased security and greater potential combinations.

The patent-pending M4 key with Shuttle Pin movable element protects against the emerging threat of 3D printing for added credential security. Passing UL437 and BHMA's rigid testing procedures reaffirms Medeco 4's ability to protect people and property.