BOYO VTBSD1 Blind Spot Detection System: Microwave radar blind spot detection system (BSD System) warns the driver if there are any vehicles in the blind spots during a lane change maneuver 2pc radar sensors 2pc LED indicator light Width detection: 9.8' from the vehicle Length detection: 49.2' behind the vehicle Audible alert Sensors are installed inside the bumper Does not require drilling through the bumper
