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Yes, the inverted deadbolt in the door is locked, and the inverted deadbolt must be opened before the door can be opened.
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The word insurance is automatic inside the lock. If you want to open it, you can only open it by manually pressing the insurance if the door is already open.
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It shouldn't be like this, you remove the lock cylinder to see if the top is in the wrong position.
The anti-theft door lock is broken, the lock can't open the door, and the deadbolt can't get out ins
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Find someone to fix it
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Open the security door in the community, there are the following situations: >>>More
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Different anti-theft door lock designs are different, and whether they can be opened depends on the design of the lock itself.