Note: Please comfirm the voltage before purchase. Features:The upgraded air compressor can prompt the horn emit a louder and clearer sound, give you a safe driving experience.You just need to connect air compressor on the horn to 12V or 24V power supply, and it will work normally.Air compressor use plastic material, strong corrosion resistance, it won t get rusty, extend the service life, more worry-free when using.Designed to replace the old one, and effectively ensure the normal operation of the automobile system.Air compressor is suitable for any 12V or 24V vehicle including trucks, cars, train, motorcycles horn kit, Etc.Specifications:Material: PlasticColor: Silver, Red, Black (optional)Voltage: 12V/24V (optional)Current: 15AAir Pressure: 0.1Mpa-0.13MpaPackage Weight: 500gPackage Size: 12 * 7.5 * 7.5cmPackage List:1 * Air Compressor