Multi-purpose Heavy Duty lock for Storage Unit, Sheds, Garages and Fences. Built-in Alarm device with loud alarming sound up to 130db, perfect for avoiding theft. The package includes: 1 Alarm Pad Lock, 1 CR2 lithium battery, 3 keys. Multi-purpose Heavy Duty lock for Storage Unit, Sheds, Garages and Fences. Made of Stainless steel, corrosion resistant, weatherproof and durable to use. Built-in siren device with loud alarming sound up to 130db, perfect for avoiding theft.