The two tone alarm acts as a great deterrent to unsuspecting opportunist thieves. The Padlock Alarm has a powerful 110dBs two tone siren which activates when the lock is tampered with. Dual use: As an alarm- to deter intruders simply replace the shackle in the correct position and lock. After a short delay the alarm will sound a warning beep if tampered with. If further movement is detected the siren will sound an impressive two tone siren scaring off would be thieves. As a normal padlock-Simply reverse the shackle and lock to secure for use as a high security padlock and a strong visual deterrent. Product Specifications: Alarm sounds if lock moved, touched or knocked Auto-alarming system and locking system Can be used alarmed or unarmed Alarm automatic reset Corrosion resistant & Anti-muffle design Batteries not accessible when locked Padlock measures 94mm high approx Key Features: Weather resistant body Powerful two tone alarm Hardened steel shackle 3 x security cut keys Warning alarm Anti-muffle alarm Battery operated (included) High security padlock Hardened zinc alloy body Corrosion resistant Tamper proof battery compartment Shock and movement sensor Can be used armed or unarmed Drill resistant u Ideal for: Gas Cylinders, Garden sheds, Oil theft, Gates, Bikes, Motorbikes, Garden, furniture, Store agents, Tool boxes, Work tools and equipment. Metal Secure Anti Theft Motion Sensor Alarm Lock with 3 Keys. Great deterrent to unsuspected opportunist thieves. Sounds a warning beep if tampered. Impressive two tone siren scaring off. Ideal for: Gas Cylinders, Garden sheds, Oil theft, Gates, Bikes, Motorbikes, Garden, furniture, Storage nits, Tool boxes, Work tools and equipment.