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Auto-lock the cylinder! Pop out the deadbolt before installing the lock cylinder; Then the widest tooth of the lock cylinder can be installed by clamping the toothguards on both sides; Give it a try!
Remove the inner and outer handle panels: Screw on the handle panel in the house.
If the security door lock is broken, it is not necessary to change the door. >>>More
Rent a building, the tenant, replace the anti-theft lock cylinder, just don't want others to enter their private territory, encroach on their own private space, as long as the lease period, should not give the key to the landlord, except for the lease period, not in the rent, this time can give the key to the landlord.
If you feel more comfortable changing the lock cylinder, you can change it yourself. Of course, it is still necessary to buy a good lock cylinder, which is of good quality and performance (it is recommended to use a C-grade lock cylinder). Then I came back and changed it myself. >>>More
Buy security doors where hardware locks.