good better best tekonsha no leveling- self-adjusts as you drive for 1-4 axle trailers multiple mounting options easy point and go setup customization automatically adjusts for terrain plugs into wiring on tow vehicles with tow package battery protection for vehicle and breakaway five storable settings for multiple vehicles or see lcd display with roadside diagnostics j.echo brake the echo mobile trailer brake control for the modern allowing you to control and monitor all trailer brake activity right from friction sway control brakes trailer if it becomes accidentally disconnected from truck limited warranty allows friction sway control to be used on most standard ball mounts sway control breakaway cable system keeps the cable off the ground and out double friction disc brake principle provides constant sway abatement trailers over 25 may require two sway controls
