Intella-Stop Ultra Brake Control

* No manual level adjustment is necessary, it adjusts itself to varying terrains as you drive. * No manual level adjustment is necessary, it adjusts itself to varying terrains as you drive. * A digital display depicts voltage delivery to the trailer during braking and displays continual diagnostics check for proper connection. * Meets National Highway Traffic Safety Administration (NHTSA) regulations regarding tow vehicle/trailer light activation. * Not recommended for use with BMW X5 Sport Utility Vehicles.