This device will set and hold the brakes on your towed vehicle in the event it should ever become separated from your coach while in motion. The Readystop is easy to install, non-invasive, and meets all United States and Canadian requirements. This product is separate from the ReadyBrake supplemental surge brake system and can be used on it's own or along with the ReadyBrake. Much more reliable than any breakaway system that requires electrical power to operate.