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Anonymous users2024-01-24Now the security doors are basically like this, their keys are hollow type, mainly distinguished in the lock, it is divided into ordinary locks (basically eliminated), AB keys (A keys 2, decoration, B check-in); ABC key, A uses the key when decorating, B must use the C key to rotate 360 degrees when using the key, otherwise it can be universal. Yes.
This security door key is a relatively high-level hybrid lock cylinder.
If it is biased when leaving the factory, this door should be a substandard product.
Anti-theft doors, of course, are not soundproof.
The internal structure of the acoustic panel is quite complex, a bit like a sponge. It's just that there are more suction holes to absorb volume. So you get the idea. What is the structure of iron? >>>More
There is no difference between anti-theft doors and security doors in the actual production process of manufacturers, in fact, the name is only changing in order to cater to the taste of the public, at the beginning it was also called anti-pry door, and then it was called anti-theft door, and then there was a security door, but in fact it was the same. >>>More
Useful, you can't open it with a key from the outside. However, technical unlocking is still hard to say. In view of the security of your apartment, you can install some physical locks inserted from the inside, such as the one used in the hotel, in addition to the chain and the thicker one you can take a look at. >>>More