Reverse battery protection for both vehicle and breakaway systems; Designed to work with electric over hydraulic trailer brakes; Multiple mounting options –including 360 degree vertical rotation; No level adjustment necessary –it adjusts itself to varying terrain as you drive; Great for backing into tough spots! Works proportionally in reverse –with the ability to disable when not needed; Produces stops that are in proportion to vehicle's deceleration rate; "Boost" feature gives users the ability to apply more initial trailer braking power; Limited lifetime warranty (some conditions apply)