Electric Time Delay Trailer Brake Controller Replace 8507111 Brakeman IV Digital Brake Control for 1 to 4 Axle Trailers (Timed) [Fitment]---Brake Control for Trailer Tow,for example: RV, trailer, truck, sightseeing car. [Easy-to-see display]---LED Digital display screens show the voltage delivery going from the brake controller to the trailer's brakes. Easy to read, easy to observe vehicle conditions in real time.In case of emergencies, make adjustments in time. [ and more stable]--- Fits 1 to 4 axle trailers to deliver a signal from your vehicle's brakes to your trailer,both quantity of power (result) and rate of the program (sync) can be adjusted to fit your inclination, the street conditions, and kind of trailer,increase the safety of driving. [Quick installation and use]---Wiring ports are available for vehicle-specific brake controller harnesses and provide a quick connection between the controller and the towing vehicle for quick and easy installation or removal. 1. Real-time monitoring, easy to observe and adjust. 2. Trailer towing is and more stable. 3. Fits 1 to 4 axle trailers. 4. Easy installation, plug and play. 5. Fits most vehicles. Color: As Shown Material: ABS Package Contents: 1 * Brake Control Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.