Agility Plug In Simple Brake Control, 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 %'s From 5-99, Plug In Simple 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.