The Bowa Brake Pad Wear Sensor - A059085 is a small electronic device designed to detect when the brake pads on a vehicle are wearing down and need to be replaced. It is compatible with a wide range of vehicle makes and models and is easy to install. The sensor works by measuring the distance between the brake pad and the rotor, and when this distance becomes too small, it triggers a warning light on the dashboard to alert the driver. This helps to ensure that the brakes are always in optimal condition, improving safety and performance on the road.