Sheling Anti-theft Security Padlock Waterproof Siren Alarm Safety Lock AL-42 Lock  (Black)

Combines locking function with alarming function. Built-in movement triggered alarm, which can emit loud sound when the Alarm Lockis hit or shaken. Adopts MCU core procedures, high-tech integrated circuit and digital sensor chip. Can be set to two states: mechanical lock and alarm. Low false Alarm Lockrate. Low power consumption. Can be used on door, window, bicycle, container, motor bike, tricycle, pull gate, garden, etc