How to correct the lock head of the security door

Old-fashioned anti-theft door lock change method:

1. After selecting the lock cylinder, unscrew the two screws on and below the handle panel, these two screws are mainly used to fix the panel, as long as you prepare a Phillips screwdriver, it can be completed, and it is very simple. ? >>>More

You first remove the lock cylinder, then go to the building materials market to buy a lock cylinder of the same size, and go home to replace it.

After the house is renovated, the owner usually wants to replace the lock cylinder of the anti-theft door, and some owners with strong hands-on ability will choose to replace the lock cylinder by themselves, so how should the lock cylinder of the anti-theft door be replaced? Next, I will briefly introduce it to you. >>>More

It depends on which brand of the finger is the Bi Dan pattern lock, depending on what model you have, different brands and different models are not the same, where can you buy it to which website to consult, or download the Saying Disturbance Ming said. If it is not attached, there may be problems with the product, and you should contact the seller to negotiate and solve it.

Measure the size of the lock cylinder.

First remove the lock cylinder to see, first remove the handle panel, and then buckle the cover on the lock cylinder to remove, fix the lock cylinder to screw on the side of the door, basically parallel to the lock cylinder, remove it can be measured. >>>More