All facilities need patented key control to effectively secure exterior and interior openings.  This strength of integrity allows security managers to have peace of mind when it comes to managing the system.  Unfortunately, instituting a new key system is not always easy....or economical. 

Medeco X4 is the most economic and efficient solution.  Medeco X4 has one of the largest master key capabilities on the market.  This allows facility managers to tie everything together under one key for ease, convenience and efficiency.  Additionally, Medeco X4 easily retrofits into existing systems so installation time is minimal.

X4 is available in the following formats: Large Format Interchangeable Core (LFIC), Small Format Interchangeable Core (SFIC), Key in Knob (KIK), Key in Lever (KIL), Rim and Mortise, Padlocks, and Deadbolts.

Medeco X4 is the perfect security upgrade for small  format interchangeable core (SFIC) installations for Best-style, Prox and iClass systems. In addition to SFIC cylinders, Medeco X4 is also available in many other styles of retrofit cylinders and can be keyed into a single system.   

Patented Key Control - Protects against unauthorized duplication of your keys.
  Uses Existing Hardware - Can be masterkeyed into a system containing Medeco BiLevel, MMedeco X4 is available in a large selection of retrofit cylinder formats, including SFIC, that can all be keyed into a single system.
  Can Be Masterkeyed - Available in Small Format Interchangeable Cores (SFIC) and other retrofit cylinder formats which can be masterkeyed together, eliminating the need to replace your existing hardware.
  Quick Change Cores - Medeco X4 Small Format Interchangeable Core's provide quick and easy cylinder changes in the event keys are lost or stolen.


  • Superior Masterkey Capabilities, up to four (4) times that of similar style cylinders
  • One key flexibility for different cylinder styles
  • Hybrid Prox and iCLASS Key compatible
  • Patented until the year 2030
  • Custom key coining for added security


  • Medeco X4 cylinders are warranted for two years against manufacturer's defects. See the Medeco® limited Warranty for full details.
  • Lifetime warranty on keys


For more information about the ASSA ABLOY complete Security Continuum visit https://www.intelligentopenings.com

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