Keep your bike, garage door, garden shed, side gate, tool box or locker, or anything you desire secure with this heavy-duty 110dB siren alarm padlock. This innovative u lock comes equipped with two settings, armed and unarmed, so you can be alerted by a 105 - 110 dB alarm when the lock is tampered with, basically, double the protection. The heavy-duty siren alarm padlock has a body made of extra strong cast steel, high-grade steel shackle. It is resistant to corrosion, poor weather, physical destroy & waterproof.