Bravo View Ps-1 Wireless Back Up Sensor System Quick and Easy Installation, Universal design affixes over existing license plate frame Wireless Dash Mountable Receiver with Audio and Visual Alerts EZ Park Stick with 3 Ultra-Sonic Sensors Includes Test Light Designed to work when you reverse Affixes Over Existing License Plate Includes Led Display Wireless Design For Quick Installation Built In Ultra-Sonic Sensors To Give Audiable and Visual Alerts Do-It-Yourself Design Includes Test Light