ACABSDLP License Plate Blind Spot Detection System. Equipped with Rear Cross Traffic which alerts the driver of vehicles approaching from the left or right while in reverse. License Plate Frame has Built-in Blind spot radar sensors located at the bottom for simplified professional installation. Blind Spot adjustable Speed activation is set to standard of 20mph and built-in the modules GPS Technology. Audible and Visual interior LED indicator alerts. Waterproof IP67 rated. year warranty. Professional Installation Required.