Electronic brake disc lock with a 13mm special hardened bolt. Bolt, lock body and supporting elements of the locking mechanism are made of special hardened steel. Alarm functions on basis of the ABUS 3-D detection system, which means that every movement is detected. Lock can be transported in locked condition without activating detection system, thanks to automatic brake disc recognition system. A multicolored LED and different acoustic signals inform about battery, activation and alarm status. ABUS XPlus cylinder for highest protection against picking. Manual keyhole cover protects against dirt and corrosion.