4 Sensor Back up kit with Ceiling Headliner Mount Display.
4 Sensor Ultra Sonic Back-up System, 4-Black Sensors, 2- display options and piezo
Dual Sensor Ultra Sonic Alert System, with Illuminating Indicators .
8 Sensor System(4 Front + 4 Rear)
4 Sensor Back-up System, Black Sensors With Longer Cables (22′)