... ) When you hear the sound "Ge.Ge.Ge..." constant voice or the alarm voice less than 10 seconds and stop suddenly, that means ... NOW! Features: 1) Can be used on: bike, scooter, door, car steering wheel, window, toolbox, truck, trailer, boat, shed, side gate ... , locker, lockroom , etc.;2) 90-95 db alarm sound; 3) Auto-alarming system & locking system; 4) Can be used alarmed or unalarmed states ...