Note: Please confirm the voltage before purchase. Features: The upgraded air compressor helps the horn produce a louder and clearer sound, providing a safer driving experience. Simply connect the air compressor to a 12V or 24V power supply, and it will operate normally. The air compressor is made of plastic material with strong corrosion resistance, preventing rust and extending service life for more reliable use. Designed as a replacement for the old unit, it effectively ensures the proper operation of the vehicle's horn system. Suitable for any 12V or 24V vehicle, including trucks, cars, trains, and motorcycles. 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 x 7.5 x 7.5cm Package List: 1 x Air Compressor