motorcycle lock,disc lock with alarm annunciator 100-110db Size:90*70*39MMAlarm:100-110dbAlarm principle: vibration alarmLock features: waterproof, anti-saw, anti- ... blister card, double blister1.Press the lock cylinder is locked, and heard the "beep", the lock has entered the alarm status, 15 ... seconds later, when the lock or when the vehicle is shaken once again issue a ...