What should I do if the lock cylinder of the security door at home is broken

In fact, this question is not a good answer, the quality of the anti-theft door also depends on you personally, the role of the door is beautiful and anti-theft, there is a flexible switch, as long as the anti-theft of the door reaches a certain degree (quality) it has an anti-theft function, generally most of the current theft is technical opening, and the destruction of the opening is relatively less, so it is generally from the lock to make a fuss. But now many of the anti-theft doors on the market are more chaotic, the steel door (steel door) is also called the anti-theft door, the anti-theft door is divided into four levels, the highest grade, there is a permanent steel seal on the door. Therefore, it is up to you to decide whether to change the door or the lock cylinder (or even the lock body). >>>More

I asked for someone to change me and told him what you wanted.

You can ask the lock changer in the store to come and help you see if it can be repaired. If it doesn't work, you can only ask him to help you change the lock cylinder of your security door.

Look where it is broken, if the lock cylinder is broken, you can change the lock cylinder between 20-80, and if the lock body is broken, change the lock body between 20-40. >>>More

Pressing the intercom doorbell can not be unlocked, because the door lock electromagnet is not engaged, so it cannot be unlocked. It is possible that the key of the doorbell is damaged or the contact is poor, and the power supply of the door lock electromagnet is not connected, resulting in the door lock cannot be engaged, and it is also possible that the door lock electromagnet is damaged, and it cannot work, which will also cause the door lock to be unable to be opened.