Universal 12V Train Air Horn 2 Trumpet Stainless Steel 150dB Loud for Car Truck Boat RV Features： 1、Dual Trumpet Air Horns: The truck horn is made of stainless steel, ensuring high stability and reliability, suitable for various environments, withstanding high frequency operation. 2、150dB Loud: With a sound level that can reach over 150db, 2 different sizes of stainless steel horns emit oversized warnings that can be heard from miles away, effective and safe method. 3、Easy Installation: Train air horn can be easily connected to the basic car electrical system, allowing for easy disassembly and transfer from one vehicle to another. 4、Wide Application: The air compressor horn kit is suitable for most vehicles, including cars, boats, trucks, tractors, and more, offering a powerful and effective solution. 5、Compact and Functional: Super loud train horn is compact and space saving, is particularly well suited for large vehicles in busy traffic or emergency situations. Specification： Item Type: Air Horn Material: Metal Size: Approx. 435mm / 17.13in, 390mm / 15.35in Working Voltage: DC 12V Working Current: 18-20A Sound Level: 150dB Operating Pressure: 0.08-0.13Mpa Fitment: Fit for 12V Boat, Yacht, Car, RV, Motocycle, Truck, etc. Package List： 1 x Air Horn 1 x Air Pump 1 x Instruction Manual 39 x Installation Accessories