1. [Support your bike anywhere]: Protect your electric motorcycle or e-bike with anti-theft bike alarm. Equipped with motion detection, remote control and sauce function, this alarm system provides 7 setting sensitivity levels for customized . This motion sensor with a vibration trigger alarm system is perfect for use in bicycle alarm, bicycle, motorcycle, electric bike, electric scooter, doors and windows. In addition, our car alarm system is made of high quality materials produced to withstand. Protects the alarm from rain and other weather conditions, provides durability and reliability. It is perfect for fixing your vehicle at public places or during storage. 3. Check the alarm up to 20 meters (up to 20 meters), providing comfort and flexibility in securing your bike. Enable the sauce help function to automatically send a help request in case of a driving accident, provides additional measures. There are seven levels of high and low, seven tons of fa, la si sound effect. Also, there are three levels: high, medium and low. The factory assumption is the highest sensitivity and maximum volume. 113DB high -volume, hidden parts installation can also deterd the thieves effectively!