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Anonymous users2024-01-24Your anti-theft door lock should be a quick lock type, not a problem with the lock cylinder, and the house itself has a quick opening function. But after you lock the outside, you twist the key to the end (until you can't twist it), turn around half a circle, and after you pull the key out, the inside can't be opened. This is called external reverse locking.
If the judgment is correct, please accept Thank you.
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Anonymous users2024-01-23It is recommended to replace the lock cylinder to choose the B-level lock cylinder or the super B-level, the B-level lock cylinder is currently the anti-theft time is relatively long, and the C-level is poor.
Now let's look at the doorknob.
It is a double-active handle that is not locked in the case of the handle can open the door inside and outside, the anti-theft door is intended to be fixed externally, and the internal movable handle can be replaced if it is newly replaced
If the key has not been given to outsiders, it can be used at the same time as AB, it doesn't matter.
C-grade is the worst lock cylinder, and the current security door is recommended to use B-grade or super B-grade lock cylinder (buy genuine brand). >>>More
The super C-level is definitely better, the structure inside is different, and the anti-technology is also anti-drilling.
Hello, it is difficult to find out the brand of C-level lock cylinder, because there is no clear definition of C-level lock cylinder, if you really want to search, you can search for super B-level lock cylinder, this kind of lock cylinder is the current C-level lock cylinder, the most popular C-level lock cylinder brands are mainly Jiaheng, Baodean, Yuema Sanhuan, Meilibao and so on.
The ex-factory price of the lock cylinder is the price of accessories and materials + labor costs, and the cost is about 30 yuan. Every 5mm length increases + to the price of 1 yuan, and some manufacturers have a higher cost of iron box packaging, and a tin box needs yuan.