Is it better to die or live than to have a security doorknob

The handle of the security door is divided into double activity and single activity, if you are the entrance door used in the community, it is recommended to use a single activity (that is, the outside is fixed), the security should be high, if it is used in public places, it is recommended to use a double active (the outside handle can also be pressed), you can enter and exit at any time without locking.

The handles on the anti-theft doors are matching, and they cannot be changed casually, mainly because many handles are not universal.

In exchange, the specific method is as follows:

1. First of all, the old doorknob should be removed. >>>More

From the inside of the security door, you can see that there are two screws in the position of the lock, open it with a screwdriver, you can remove the door handle inside, and you don't need to move outside, at this time, you can see that there is an iron pin 10cm long, and you can take the pin off it by hand, which is very simple. Then it is to change the iron pin from the original 10cm to make it yourself, you can go to the hardware store, and you can cut it off for a dollar). After the size is changed, you can put the iron pin back on, remember to put the iron pin on the doorknob first, and then install the doorknob, and put on the screws. >>>More

It's the same as keyless entry and locking the car today. Press once to lock the door, press twice to lock the door.