1. Choose brand-name door locks produced by manufacturers with quality assurance.
2. Pay attention to the door lock that is the same direction as your door.
3, pay attention to the width of your home door frame, the ball lock and handle lock can not be used on the door less than 90CM.
4. Pay special attention when installing the door lock. You can only fold the end with the insurance to install it. Do not fold the installation with the key.
5, do not drop the oil into the lock, if the key does not work, you can put some pencil core pin into the key eye.
6. If the in-home insurance is inadvertently rotated to 90 degrees, it will become a permanent insurance. This can only be started with a key. Simply turn the insurance counterclockwise to 90 degrees to recover.
7. Do not wipe the lock body and handle with a damp cloth, rotate the lock tongue into the lock body, and then release the door after closing the door, otherwise the service life of the door lock will be reduced.