... vibrate sensorResistant corrosion , Resistant bad weather, Resistant physical destory, Waterproof .Lock pin diameter : 7.0 or 5.5mm6 pcs button batteries ... :30000pcs LK303 Usage direction: Patent:200420003536.01. Press the lock core, it will be locked and you will hear the ... alarm situation,after 15 seconds. When the lock body or vehicle is vibrated again, the lock will give an alarmDU DU DU three ...