Vehicle Horn Speaker System with 8 Melody Options, 12V 24V Power Supply, Adjustable Sound Level Switch Features: Customizable Sound Effects: This Car Horn Sound Effect Controller offers 8 different sound options, allowing you to personalize your vehicle's horn sound. Adjustable Volume Levels: Each sound effect has an adjustable volume level, providing flexibility to set the ideal loudness for any situation. Durable Construction: Made from high-quality ABS material, this horn controller is designed for long-term durability and reliable performance under daily use. Elegant Metal Knob Design: The metal knob adds a refined touch to your car interior and ensures comfortable, precise control. Easy Installation and Wide Compatibility: Designed for simple setup, this unit connects easily to various car horn systems and supports 12V to 24V power supply for broad vehicle compatibility. Note: Installation guide is not included. Professional installation is recommended. Please verify all specifications to ensure compatibility before purchase. Product design, color, or appearance may vary slightly due to ongoing updates. Label text may differ and cannot be customized. Specifications: Number of Sounds: 8 Material: Plastic Color: As shown in image Package Contents: 1 x Musical Electronic Horn Controller Note: Other items not included. Color may vary slightly due to lighting and display differences. Measurement tolerance: ±1-3 cm.