The compact Urban Security lock is 14mm thick and can be fitted wherever the is an appropriate cutout in the disc. Discreet protection against theft of your scooter or motorcycle. When attempting to break the brake disc lock a flashing light and loud alarm is activated. The alarm function can be disabled and the lock used as a simple drive-away lock for the brake disc. The electronics of the lock are resistant to all types of weather. Equipped with 2x AAA batteries. A replacement alarm module and the holder are available separately.