1Comprehensive inspection, no dead ends, improve your parking safety. 2Minimize bumper damage. Completely built-in installation does not affect the overall appearance. 3Suitable for any car, truck, RV or minivan. 4Simple and concealed installation method, no-clean, no-maintenance, once installed, it can be used once and for all. 5The range of 3 feet is detected and the signal indicates the object distance at different beep frequencies when the signal approaches obstacles at different distances.