A Kinbar brand 110dB alarm padlock with a 10mm shackle, designed for anti-theft security. Dual Mode: The lock can be used in either a mechanical locking mode or with the 110dB motion-sensor alarm active.Trigger Mechanism: A built-in sensor detects vibration, movement, or tampering to activate the loud siren.Durability: The padlock features a hardened steel shackle and a corrosion-resistant body, suitable for various weather conditions.Package Contents: Each lock generally includes three keys and comes pre-fitted with replaceable LR44/AG13 batteries.