180dB Super Loud Zinc Alloy 12V / 24V Single Tube Air Horn for Trucks Buses Boat Trains Wear-resistant Whistle Horn Description Product Name: Wear-resistant Whistle Horn Voltage: 12V / 24V Type: Multi-tone & Claxon Horns Sound Level: 180db Material: Zinc Alloy Features: - Easy to install: Equipped with a sturdy bracket, screws and nuts to ensure the speaker is securely installed and not easily loosened. Meanwhile, the bracket design is reasonable, making it convenient for users to quickly install and disassemble. - Safe Driving : The air horn unique whistling sound and the loud volume of 180DB can effectively remind the vehicle ahead. - High Gloss Silver Electroplating Process: Using advanced electroplating technology, the surface of the speaker is given a bright silver luster, which is not only aesthetically pleasing but also effectively resistant to oxidation and corrosion. - Installation and Use : The positive and negative poles of the original horn control wire are respectively connected to the two black wires of the whistle horn, and the original vehicle air pipe is connected to the air nozzle of the truck horn solenoid valve. - Premium Material : the horn solenoid valve is made of zinc Iron copper, undergoes rigorous inspection and testing, has excellent performance and to ensure maximum strength and durability. Sound Level: 180dB. Working Current: 3.0A. Operating Air Pressure: 0.3Mpa~0.8Mpa. Place of Application: - DC 12v / 24v vehicle with air supply, such as truck bus train boat etc. Product Weight: 420 G / 14.82 Ounces Product Dimensions (L*W*H): 24.4*8.3*8.3 CM / 9.61*3.27*3.27 Inches Package Weight: 482.0 G / 17.00 Ounces Package Dimensions (L*W*H): 26.0*9.0*9.0 CM / 10.24*3.54*3.54 Inches Retail Packaging: Yes, General Box Package include Package Including: 1 x Air Horn