Can the security door lift handle be replaced separately?

Test Certificate".

Remove the cat's eye, doorbell box, or lock handle and inspect the internal structure of the door. There should be several reinforcing steel bars inside the door to organically connect the front and rear panels of the door body. It is best to have asbestos and other materials with fireproof, thermal insulation and sound insulation functions as filling. >>>More

This is actually very simple, you lift the handle again, it is estimated that you did not lift the handle up before.

It can be opened, and it is called abnormal if it cannot be opened.

1. Check whether the circlip of the handle is broken. 2. Check whether the square pin inside is falling off. If the lock body can be opened and closed normally from the inside, then there is no problem.

Yes, ask the locksmith to change the position of the pin in the lock cylinder and match the key.