... waterproof, anti-saw, anti-shear, anti-bad weather, corrosionMaterial: zinc alloy lockMOQ:30pcs(1 carton)GW/NW: 18.5/18 ... card, double blister1.Press the lock cylinder is locked, and heard the "beep", the lock has entered the alarm status, ... 15 seconds later, when the lock or when the vehicle is shaken once again issue ... time.2. With a key to open the lock will stop the alarm.