How to open the anti theft door lock

The normal door should be locked on the outside, and the keyhole on the inside can be opened, and the reverse is the same, but the direction of rotation is different If you can't open it, I think it may be that you have changed the lock cylinder or the door is too rubbish. Find a lockpicking company to help you open it.

2. If you can't use the key a few times, you can also find an X-ray film to see if the lock in the door can be opened.

3. If the door is thick and there are grooves in the door gap. You can try to break the handle in the opposite direction by yourself, or use a tool such as pliers to pin it off, and the handle will generally fall off. And generally speaking, don't worry after the handle falls off, in fact, the only thing that is bad is the shell of the lock, and the intermediate structure such as the lock cylinder is not broken, just replace a shell.

Spend some money to find a 110 locksmith You can't do it if you don't understand this.

If the anti-theft door is locked indoors, after removing the key, the key can be opened by using the key outside the door, but if the key is locked indoors, the key is rotated 90 degrees and the key is not removed.