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The core component of the security door is the lock cylinder, and the door is safe after replacing the new lock cylinder.
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Yes, only this one has a secret, the others are transmission and mechanical structure.
Professional unlockers can unravel it, no problem.
In this case, as long as the lock heart is changed, there are several kinds of lock hearts, and it is OK to buy a miscellaneous lock at will, and remove the old lock core to buy the same one, about 50 to 100, and the quality is different
When looking for the lock first, let the master use the insert to insert the door lock (the insert unlocking is not to hurt the door lock anything) to open the door and then replace the lock cylinder, so that the damage to the door lock and the door is small, and the price of changing the lock cylinder is not very expensive, in addition, it is recommended that you have better change the door lock of the password lock fingerprint lock to avoid losing the key and not opening the door.
1. Unscrew down the two screws on and below the pull handle panel; >>>More
It's quite simple to change the lock cylinder of the anti-theft door, just a diagram.