1Superior Sound Quality: Crafted with ABS and metal materials, the horn kit produces loud, clear sound. It ensures that your vehicle has an effective audible warning, whether driving on a noisy forest track or a city street. 2Enhanced Vehicle Safety: With its loud and clear sound, the horn kit greatly increases your vehicle's safety. The potent sound ensures that other drivers are well aware of your presence. 3Reliable Circuit Design: The kit features a professional wiring harness relay, ensuring a stable circuit output. This avoids any horn response delay or distortion, continually offering you reliable warning protection. 4Universal for 24V Vehicles: Electric horn is universal for 24V vehicles, can be widely used, suitable for truck, bus, train, evaporator, and ship, etc. 12V vehicles are not applicable. 5Comprehensive Kit: The electric horn kit provides a complete set that includes both a horn switch and a wiring harness relay to make installation and adjustments as easy as possible. 2 x Horns 1 x Switch 1 x Wiring Harness 1 x Relay 4 x Accessories