1Enhanced Security: Our electric bike alarm controller kit comes complete with a 24V 500W controller, alarm, and two keys, offering advanced theft detection to ensure the utmost safety and security of your bike. 2Wireless Remote Control: With a powerful wireless range of up to 66 feet (approximately 20.1 meters), our bike alarm kit allows convenient operation and control without the need for physical contact. 3Bike Locating Function: Easily locate your electric bike in crowded areas with the ringtone feature, enabling you to quickly and effortlessly find your bike even in busy spaces. 4Versatile Utility: Designed for a wide range of applications, the alarm controller kit is compatible with electric bikes, motorcycles, and scooters, as well as serving as a door or window vibration alarm for added security. 5Aluminum Alloy and Plastic Material: This electric bike alarm controller kit is made of premium aluminum alloy and plastic, with a long service life, greatly improves the fun of riding.