Description Note:Not including compressor! If friends want to purchase additional compressors, they can contact me to recommend compressors. Voltage: 12V / 24V Type: Multi-tone & Claxon Horns Sound Level: 150db Material: Chrome Plated Zinc Alloy(Non-Rusting) Features: - The horn is made of good materials, hard texture, high temperature resistance, aging resistance, can be used for a long time without deformation. - The horn set does not come with an air pump, you need to prepare your own air pump. When using the air pump, be sure to remove the original horn on the solenoid valve, and then install the connected gas nozzle and pump outlet. - The horn emits 150db loud and powerful sound, with clear and safe sound with good penetration. - Wide range of use, suitable for trucks and all types of cars. Trumpet Diameter: 90mm / 3.54in Trumpet Length: 443mm / 17in Place of Application: Truck, Lorry, Train, Boat Note: - The connectors for the solenoid valve and air pipe should be tightened carefully to ensure a proper connection. - During use, the filter screen may sometimes get clogged. It is recommended to clean it regularly to prevent any impact on the sound or performance- This kit does not include a compressor. Additional components such as wiring, relays, switches, and hardware may be required for complete installation. - The packaging is generic. The actual product received shall prevail in case of any discrepancies.If the original vehicle is equipped with an air source, this solenoid valve model can be chosen. For vehicles without an air source, please select other air pump models. The link is solenoid valve model. Please confirm before making a purchase. Product Weight: 510 G / 17.99 Ounces Package include Package Including: 1 x Air Horn

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