AOLIHAN Whistle Horn 120db Red Air Horn Universal Purpose 12v/24v Air Pressure Whistle Horn Fit for Trucks Buses Boat Trains etc.

Premium Material : The whistle horn tube is made of high quality ABS material, the horn solenoid valve is made of high-quality zinc Iron copper, undergoes rigorous quality inspection and testing, has excellent performance and to ensure maximum strength and durability, long term use. Safe Driving : The air horn's unique whistling sound and the loud volume of 120DB can effectively remind the vehicle ahead, and provide a certain degree of safety for driving and reduce accidents. 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.(Requires connection to vehicle air supply) Sound Level: 120dB, Working Current: 3.0A, Operating Air Pressure: 0.3Mpa~0.8Mpa. Suitable for any DC 12V/24V Vehicle with Air Supply, Such As Truck Bus Train Boat etc. If you encounter any problems during the installation and wiring process, please contact us at the first time, and we will give you detailed installation information until you are satisfied.