... normally Alarm function:1. when the alarm lock start the anti-theft and alarm function, it should be have warning tone!2 ... address. 4.the origin of product, quantity, volume, brand label, Anti-counterfeiting code Numbers and date of production. Label :1.Laser ... market demand developed a new-style lock---Anti-theft Alarm lock, it can be waterproof, Anti-cutting, protect from technical open and master ...