Proportional braking technology. Inertia activated accelerometer instantly activates brakes. Controller mirrors braking action of tow vehicle. Greatly reduces stopping distance. On-the-fly sensitivity adjustments. Fully digital settings- braking power percent's from 5-99. Plug-In Simple(R) connection. Cuts installation time by hours, allows for quick removal. Innovative vertical slide, ease of use. Short proof protected. Flexible mounting options- self leveling. 8-brake capacity. Lifetime warranty.