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You're talking about locks... It's the lock in the middle, there's a red safety on it, and that's generally aluminum... Easy to break、、、 there is another one that is plastic, more likely to break, it is recommended that you try to minimize the use of the lock in the middle...
Once locked, the outside cannot be opened with a key,,, and the inside is not easy to open.
I must have come to step on the point, I have paid attention recently, and I can tell the property not to let strangers into the community.
It's used to ring the doorbell!!
Change the lock cylinder on an ordinary security door according to different regions, the price should be between 40-180, and there are nearly 10 types of cross lock cylinders. Large cities should be between 80-180. ** >>>More
Security doorHow much does it cost to change the lock cylinder? When your security door. >>>More
This problem is very troublesome, if the inner key is not rotated, the outside can be inserted directly into the inner barrel, if it rotates, there is no way! I can only ask for help from the lockpicker!