1.used for door ,window,box,case. 2.Patent: 200630119757.9 3.CE & ROHS 4.110db,waterproof 5.manufacturer ,OEM offered union)ITEM NO.:LK325 alarm padlock , Patent: 200630119757.9 Can be used on:Door, bike, window, toolbox, truck, trailer,, container ,garden machinery etcLock Features:105-110 db alarm soundCan be used alarmed or unalarmed statesAutomatic alarm resetShake, move or vibrate ...