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. As you approach your stop your trailer will gradually brake in the same manner as your tow vehicle. Just set the initial power level, and you're good to go.