A brake controller is a device used in vehicles to manage the braking system of a trailer. It helps ensure that the trailer's brakes engage in sync with the towing vehicle's brakes, providing safer and more controlled stopping. Brake controllers are especially important for larger trailers, such as those used for camping or hauling heavy loads. There are two main types of brake controllers: time-delayed and proportional. Time-delayed controllers apply the trailer brakes after a set delay, while proportional controllers adjust the braking force based on the towing vehicle's braking intensity. Both types enhance safety and stability during towing.