The opening of the ordinary security door

The lock edge of the anti-theft door adopts a structure with a lock and anti-pry edge design, which bolts the door leaf and the door frame into an effective whole, reducing the entry of the pry tool, so as to effectively prevent violent opening.

The general security door is unlocked, and it can be opened by rotating the key (note that there are left and right) for three weeks, otherwise it is locked. The operation of the unit on the outside can be the same, and the inside needs to rotate a button or move a mechanism. There are many varieties, and you can only read the manual.

Under normal circumstances, it is outward, if you need to go inward, you can also change the direction of the lock and doorknob, it is very easy to change the direction of the lock cylinder, basically a screwdriver will be done. >>>More

It cannot be changed unless you choose a new one with ventilation. >>>More

This is not good to answer you, how to say it, the anti-theft door lock cylinder is also divided into good and bad, good lock cylinder anti-theft performance is very good, fingerprint lock is the same, such as a good brand, good workmanship, security is much higher than mechanical locks, can only say that the price performance of big brands is stable, the safety factor is high, but the corresponding price is higher.