Quantity: 1 【Alarm Sound Device】This padlock has an alarm function, and if a thief tries to open the lock, it will sound an alarm to alert and deter the thief. The alarm sound is a loud 120 decibels, audible from a distance, providing a significant psychological shock to potential thieves, effectively driving them away. 【Adjustable Alarm Mode】This padlock allows you to adjust the alarm status to either alarm or non-alarm mode according to your preference. You can turn off the alarm when it's not needed. The battery life is up to 730 days, so you don't have to worry about the alarm going off due to a dead battery. 【Nano-Plated for Wear Resistance and Durability】The lock body is made with nano-plating, the coating is hard, wear-resistant, and durable, with corrosion resistance, making it less prone to rust and less susceptible to contamination. 【Heat-Treated Hardened Lock Beam】The lock beam has undergone heat treatment and hardening, making it strong and resistant to damage from scissors or saws. It can effectively prevent damage from scissors and saws and is resistant to shearing and friction. 【Suitable for Various Locations】Specially designed for indoor and outdoor use. Ideal for schools, gyms, offices, dorms, warehouses, cabinets, gates, toolboxes, bags, bicycles, fences, etc. al-50