Alarm Lock Universal Security Anti-Theft Padlock is a top device that provides peace of mind and ensures the safety of your motorcycle, bicycle, door, window, home, office, bicycle or bike. And the alarm padlock has a strong locking mechanism, which is tough. Made of steel and designed to be securely fastened to prevent unauthorized entry. And with its 110db siren and motion sensor technology, this padlock offers advanced security features that are unmatched on the market. And alarm padlocks are designed to be weather-resistant. The inner body is brass and the outer body is plastic and hardened iron shackle and simply attach it to your desired object or location using a durable lock mechanism, and activate the alarm with the push of a button and the power source is a replaceable battery, with a set pack of extra batteries. And whether you're using it indoors or out, this lock is designed to withstand wear and tear, giving you long-lasting security protection you can count on.