113dB Security Alarm: Once triggered, the super loud sound will be a huge deterrent. Not only for bicycles and motorcycles, but also for electric bicycles, scooters, doors, and windows. Waterproof Bike Alarm: PC material shell, IP55 waterproof grade, can be used outdoors. EASY TO INSTALL: Two mounting tools, double-sided stickers, and straps can firmly and securely attach the siren to bicycles, motorcycles, cars, or other devices. 3-Level Volume; 7-Level Sensitivity: Adjustable volume and sensitivity. Simply press the remote control to set it up. Simple and practical. Expandable: If you need an additional remote control for a family member or simply as a spare. Simply order in "Special Offers and Product Promotions". Package: 1* alarm Size: 9.4 x 4.1 x 2.1 cm Working voltage: 4.5 (V) Scope of application: Motorcycle electric vehicle anti-theft alarm Type: Vibration alarm detector Note: Due to the different images displayed, the actual color shall prevail. Dimensions are measured by