Wireless Burglar Vibration Waterproof Alarm This is a multi-purpose vibration alarm. The alarm will sound when it is triggered by vibration. When the alarm is in arming mode, the alarm will sound once when it is triggered for the first time; if it is triggered again within 2-12s, the alarm will sound for 30s and then stop, and then re-enter arming mode. The unlock button of the remote control can make the alarm stop. 3 levels of volume and 7 levels of sensitivity can be adjusted. 113dB super loud volume deters theft. Easy to set whether the alarm is triggered by a light touch or a hard shake. IP54 waterproof, no fear of rain or snow. The lightning button on the remote control can be used as a proximity finding bell or warning bell. Ideal for bicycle, scooter, motorcycle anti-theft, simple anti-theft system for home apartment doors and windows, or as protection for luggage, boxes or other personal items.