Truly universal works with all auxiliary towed car braking systems that depress the brake pedal. Protects your towed vehicles brakes by reporting any braking activity to the monitor inside the motorhome. Offers line-of-sight transmission up to 1000. Proprietary send/receive circuitry confirms each signal at 100% reception. Includes a low battery alert, extended braking and breakaway alarms, plus five other audio and/or visual alarms and system status notification. Automatic operation activates only when the motorhome and the towed car are connected for towing. Fast, easy installation on towed car; simply plug the motorhome monitor into any 12-volt outlet. Universal brake light switch eliminates cutting towed cars OEM switch wire when installing monitor. | Roadmaster Wireless Universal Supplemental Braking System Monitor & Brake Light Switch Kit