Autowbrake - Plug and Tow Trailer Mounted Electric Brake Controller FREE 3 YEAR WARRANTY: Wireless communication between the remote hand unit and trailer mounted power module QUICK & EASY INSTALLATION: Once the Autowbrake is mounted on your trailer and connected to your vehicle, there is no sync up necessary to the key fob. VERSATILITY: Built for all-weather conditions and works on everything from luxury cars to back-road pickup trucks. Sleep mode automatically disables controller if another brake controller is detected UNIQUE CONCEPT: The Autowbrake is a self-contained fully functional, electric brake control that mounts where it truly belongs - on the trailer. With the Autowbrake, you can get emergency braking or general braking from your trailer brakes automatically. This means that, unlike time-delay controllers - which send the same amount of preset power to your trailer brakes every time - proportional controllers are able to adapt to every braking situation differently.