SmartZone Sensing actively senses the location (Left, Middle, Right), and how far away the object is from the vehicle, letting the driver know the exact location of an object. Helps prevent accidents when backing. Wide-angle camera adjusts for optimal viewing. Detects objects up to 5-1/2 feet away. Easily mounts behind license plate. 2-1/2" color monitor. Audible alarm. 1-year warranty. System includes: 2.5" LCD color monitor, wide angle camera, mounting bracket with 2 sensors and installation cables.