ADVBSD30 Blind Spot Detection System 3.0 w/ Cross Traffic Alerts Overtaking Alert - alerts when equipped vehicles passes another vehicle Selectable blind spot speed activation, 15mph or on all the time Includes sensor alignmnet tool in kit Standard driving Blind Spot alerts are shown when other vehicles, people or objects enter the Blind spot of the vehicle Equipped with Rear Cross Traffic which alerts the driver of vehicles approaching from the left or right while in reverse Blind spot radar sensors located behind the bumper for simplified professional installation Blind Spot adjustable Speed activation is set to a standard of 20mph and built-in the modules GPS Technology Audible & Visual LED indicator alerts Waterproof IP67 rated