CYK190 is a special cylinder that allows you to share with external persons only the keys to a building relating to the premises to which they are authorised to access.
A key ring is inserted at the rear end of the cylinder; the maintenance keys required by the user are attached here. The device is inserted into the actual deposit (a special metal tube) inserted into a wall of the building.
Users are provided with a key to open the cylinder so that they can retrieve the maintenance keys attached inside.
