Controller Switch for Lightbars you will know more. You can choose the style and function you like. A simple model with just a switch and mode changeover. The other types are multi-function controllers, including control buttons for takedown lights, alley lights, guide lights, front and rear rows, and all lights. Quality assurance, no need to worry that it will be damaged easily. Can be controlled with one hand, simple operation and easy to use. Contact us here if you have any questions about our high quality and affordable led lights.