Used on my Van-Motorhome, to aid in reverse. Is associated with a TFT monitor mirror 7pces HooToo. Brings any satisfaction the improvement in the framework of security and avoids the maneuver blindly. The camera gives a clear view of the obstacles and their distance to the center and sides with the OSD. Radar / Beeper it has a rather average operation and sometimes capricious covers only a central restricted area, sometimes without nuisance tripping presence of obstacle (AR stillpoint AR to stop the beep - is this because stop lights that light up ????) does detect a wall or obstacle background but not the side posts. Will probably have to add a reverse radar system in the Ar bumper.