Fitment: The Brakeman IV digital brake controller is compatible with all types of trailers.such as trailers, trucks, tour buses,RV and more vehicles with 1 to 4 Axles (2-, 4-, 6-, 8- brake systems). Time-Delayed Brake Activation: The controller allows for precise control of braking over a set time delay, ensuring smoother braking transitions and reducing jerky or abrupt stops when towing a trailer.improving overall towing safety. LED Display for Clear Status Indication: Equipped with an LED display that clearly shows the current braking force, allowing users to monitor and adjust the settings for optimal performance.Adjustable brake force and consistent braking performance. Easy Installation: Compact and durable Design for simple installation,ensuring long-lasting performance. This controller can be quickly mounted in most vehicles with minimal effort, saving time and installation costs. Package Include: 1 x Brake Controller, 1 x mounting bracket, 6 x mounting screws, 1x instruction.