The product is a used 2020 Mercedes GLA250 Blind Spot Radar Sensor Control Module with the manufacturer part number A0009052504. This module includes a radar sensor for detecting blind spots, specifically designed for the rear of the vehicle. It is made of plastic and features a black connector color. The sensor is a genuine OEM part from Mercedes-Benz, ensuring quality and compatibility with the specified model, the Mercedes GLA-Class. Easy installation is highlighted as a key feature, making it a convenient option for drivers looking to enhance their vehicle's advanced driver assistance systems.