Feature 1The upgraded air compressor, which can prompt the horn emit a louder and clearer sound, give you a safe driving experience. 2You just need to connect air compressor on the horn to 12V or 24V power supply, and it will work normally. 3Air compressor use plastic material, strong corrosion resistance,it won\u0027t get rusty,extend the service life, more worry-free when using. 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 wont 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: Plastic Color: Silver, Red, Black (optional) Voltage: 12V/24V (optional) Current: 15A Air Pressure: 0.1Mpa-0.13Mpa Package Weight: 500g Package Size: 12 * 7.5 * 7.5cm Package List: 1 * Air Compressor Package List 1 * Air Compressor