How to lock the security door from the inside? That is, the inside is locked, and there is a key on

Generally, there is an anti-lock button under the handle, and the rotary button can be reversed, but with the development of the anti-theft door lock body is becoming more and more high-end, Anqing, firm, after the ordinary anti-lock, only the lock post of the anti-lock can be locked, and the lock post of the entire main lock can be fully locked after the good anti-lock, which is safer and firmer.

The door lock is stuck, and you have to pull the door into the door to open it.

There is a one-word rotary button under the handle, which is an indoor safe, which can not be opened outdoors when locked, and the heaven and earth lock can be locked indoors and outdoors with a key! There is also a double quick lock, which can quickly lock all the deadbolts by lifting the handle! Heaven and earth locks, side locks, master locks!

Is the anti-lock under your key open? If you can't open it, remove the screws, and then buy a lock cylinder to replace it.

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, maybe you have changed the lock cylinder or the door is too rubbish. Find a lockpicking company to help you open it.