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, Bad Weather, Physical Destroy & Waterproof. Alarm System - Alarm Sound: 110Db Siren /115Db Siren - Alarm In The Bottom Of The Lock Body - Alarm Under Water, Waterproof - Auto-Alarming System & Locking System - Can Be Used Alarmed Or Without Alarm - Three Tone Alarm - Automatic Reset - Dual Shock & Movement Sensor