The magnetic defender better protects the cylinder to impede breaking and entering.
The defender can be opened by using a magnetic coded key. To open it, you can lay the magnetic key on the defender and turn it by 180°; in this way you can have access to the cylinder of the security door and open the door.
You can easily close the defender turning its cover by hand, without using the magnetic key: in this way the cylinder is safe. The defender kit includes a card with a secret code for key duplication. It is available in different colours, according to the colour of the handle set, both for European cylinder and double bitted key.