Note: Please confirm the voltage before purchase. Features: The upgraded air compressor enhances the horn's performance, producing a louder and clearer sound for 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 older models, it effectively ensures the proper operation of the vehicle's horn system. Compatible with any 12V or 24V vehicle, including cars, trucks, motorcycles, and trains. 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