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No, you can't.
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Try unscrewing the screws on the door and removing the doorknob.
Hit 110 to unlock.
Or if there is a lock at the door, it can also be opened. >>>More
The middle fork of the lock cylinder is a clutch structure, the key inserted first can be inserted in place, and the key inserted after the key can not be inserted in place (the lock cylinder cannot be opened) only after the key inserted first is taken out, and the key inserted after the insertion can be inserted in place. This is normal. It is worth noting that if there is a key inserted in the door, you must remember to take it out when you go out. >>>More
Inside the door is a mezzanine with a lock.
This kind of lock is a double quick lock, that is, the door is locked from the inside and outside of the door without a key, and the door is locked immediately by lifting the handle up, which is convenient and fast. You must take the key to enter the door outside, and you only need to press down on the handle to open the door in the house, even if you lock it. This makes it easier to escape.
Are you using the wrong key? Now the security door has two keys, one is the decoration key, the other is the owner's key, and the owner's key is inserted into the decoration key and the door cannot be opened.