Features： 1、Wide Application: The air horn is suitable for any vehicle with DC 12V power supply, suitable for cars, trucks, boats, yachts, off road vehicles, buses. 2、Loud Sound: The professionally designed dual horn with 130dB loud can greatly attract others' attention and give you a safe driving experience. 3、Reliable Material: This dual horn is made of excellent metal material, which ensures strong durability and has long life, also can work in various temperature environments. 4、Easy Install: The double air horn is equipped with matching accessories required for installation, and the operation process is simple, quick and easy. 5、Installation Precautions: The the compressor must be installed in a vertical position away from hot engine parts. The installation horns are slightly downward. Specification： Item Type: Dual Trumpet Horn Material: Metal Voltage: DC 12V Current: 20.0 A Sound Level: 130 db Operating Pressure: 0.1mpa ~ 0.15mpa Applicable Models: Universal replacement of truck, car, train horn, suspension, ride, package, system Suitable for all 12V vehicles, yachts and vessels Package List： 1 x Air horn 34 x Accessories 1 x Motor 1 x User Manual 4 x Wire Harness 2 x Ties