Feature: 1. Durable Material: The air horn is made of excellent metal materials to ensure maximum strength and durability, and can withstand harsh weather. 2. 150db Powerful Sound: 3 trumpet air horn gives out louder and powerful warnings, can produce 150dB sound output, attract attention and improve travel safety. 3. For 12V Vehicles: The 12V DC power compressor can be installed almost anywhere in the vehicle and is suitable for all 12V vehicles, such as ships, trucks, tractors, etc. 4. Complete Accessories: The air horn kit is easy to install and is equipped with complete accessories, which is convenient and practical. 5. Wide Applicability: Used for the modification, replacement, maintenance, refurbishment, decoration, etc. of the original car horn system Specification: Item Type: 3 Trumpet Air Horn Status: 100% brand new Material: Metal Colour: Black Air Pump Parameters: Working Voltage: 12V Motor Size: Approx. 160 x 85 x 140mm / 6.3 x 3.3 x 5.5in Tank Size: Approx. 150 x 140 x 185mm / 5.9 x 5.5 x 7.3in Tank Capacity: 2L(0.5GAL) Pressure Switch Setting: 90-115PSI Maximum Working Pressure: 150PSI Maximum Working Current: 20Am Duty Cycle (100PSI): 25% Horn Parameters: Horn Size: Approx. 350 x 152 x 155mm / 13.8 x 6 x 6.1in Voltage: DC 12V Current: 5.0A Sound Output: 150dB Operating Air Pressure: 0.3Mpa-0.8Mpa Application: Used for modification, replacement, maintenance, refurbishment, decoration, etc. of the original car horn system, wide applicability Applicable: For all vehicles with 12V, such as Pickup RV SUV(cars, trucks, trains, boats, tractors). Package List: 1 x Gas Tank1 x Horn1 x Air Compressor1 x Pressure Gauge1 x Hose1 x Tape1 x Fuse1 x Gray Filter1 x Switch Button1 x Drain Valve Compression Joint1 x OD Air Pipeline1 x Power Plug2 x Filter Sponge21 x Accessories1 x User Manual Note: The product must be installed horizontally, do not install upside down or tilted.