Feature: 1. Enhanced 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. 2. Wireless 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. 3. Bike 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. 4. Versatile 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. 5. Aluminum 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. Specification: Item Type: Electric Bike Alarm Controller Kit Material: Aluminum alloy, plastic Weight: Approx. 279g/9.8oz Single Key Battery Type: CR2032 button battery (shipped with built in battery) Single Key Battery Capacity: 150mAh Two Keys Total Battery Capacity: 300mAh. Package List: 1 x Controller 1 x Alarm 2 x Keys