After locking, if someone moves the electric scooter, the alarm will emit a 115-decibel alarm sound to draw peoples attention. Features: This anti-theft alarm, specifically designed for electric scooters, Features a universal wide voltage design of 36-55V. It offers superior safety conservation for your scooter. The installation process is straightforward and does not damage the original vehicle wiring. With a super loud 115 dB horn, this electronic anti-theft alarm effectively deters thieves. Crafted from high-grade materials, it ensures long-lasting use. Specifications: Material: Plastic Sound volume: 115 dB Size: 5.4*3.4*2.2cm/ 2.1*1.3*0.9in (alarm); 10.4*3.8cm/ 4.1*1.5in (key) Package weight: 94g/ 3.3oz Package List: 1 * alarm 2 * keys