Which is easy to use, which is the single active, double active or double fast anti theft door lock

There is a difference between double-active and double-fast, double-active means that the door can be opened by pressing the handle inside and outside the door without anti-locking, and the door can be locked by lifting the handle inside and outside the door.

OK. The anti-theft door lock of Active-Active can be changed to double-fast, but it must be removed and installed as a double-fast. You can find a professional repair and installation master to replace, the B-level lock has a double-row bullet slot, and the difference with the A-level lock is that the key surface has a row of curved and irregular lines, this kind of lock can be replaced. >>>More

Theoretically, yes. It is recommended to find a special maintenance master to install and repair it. >>>More

It's easy to have problems, and when you're outside, the handle is also a lock door, but you can only use a key to open the door, and if you don't bring the key, you'll be locked outside, and the life of the lock is not as long as ordinary.

It's all about the same, the Meilibao propaganda is good, but the quality is not good, there are too many bad, it is difficult to insert the key in about two or three months or difficult to pull out, this is why the manufacturer sends graphite powder, if you don't send it, it is more bad, this is the common problem of the Meilibo lock cylinder, if you want to buy a good lock cylinder with high security, you can consider the Jiabo super C-level lock cylinder, the quality is good, but the price is a bit expensive, but I think it is worth it, because the most important thing about an anti-theft door is the lock cylinder.