THE SAFE ALARM SYSTEM FOR YOUR BICYCLEA lock is good, a lock with an alarm system is better. With 100 decibels, the 440A padlock will send every thief running.We protect our most valuable possessions with an alarm system. So why not our bike? Our padlock 440 Alarm is equipped with the proven 3D Position Detection System, which registers even the smallest movement. If a thief tampers with your bicycle, the lock sounds the alarm immediately. And at a volume that discourages: 100 decibels is as loud as a circular saw and can therefore be heard from afar. An alarm like that will scare off any bike thief.Technology:Hardened 12 mm round shackleThe shackle, the body and the load-bearing parts of the locking mechanism are manufactured using specially hardened steelSpecial, modern design of the lock body casing allows for optimum handlingHigh-quality locking cylinder for high protection against manipulation, e.g. pickingAlarm at a volume of at least 100 dB for 15 seconds, followed by automatic reactivation3D Position Detection †detects vibrations and the smallest of movements in all three dimensions and triggers an alarmCR2 batteries included