Mechanical Door Locks


Safe from Professional Robbery

  • Patented mechanical door lock (No battery needed)
  • Door Opening by plastic key (punched card key) only.
    (Even locksmith can not open doors without the key)
  • N of holes are randomly pierced on a card and used as a key.
  • Lock or unlcok door lock by recognizing the depth and pierced hole or not pierced hole.
  • High security lock (the rate of same key : 1 / 1,000,000)
  • Easy to carry a key as it is tiny plastic card.
  • Simple and easy to install
  • Developed by a professional cryptologist worked for the Korean ministry of National Defense.
  • General mechanical door lock is easily opened by thief or locksmiths but not for Safecombo.


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