Crimestopper Reverse Parking Sensor System with Four-Direction LED Display - Backstopper CRM CA5010 Reverse parking sensor system with top-dash mounted LED display, 4-sensor direction indicator on display, Includes hole saw bit for drilling sensors into bumper and extra mounting shims to raise or lower detecting angle.Reverse Parking Sensor System with Four-Direction LED Display - Backstopper CRM CA5010 Crimestopper. Color LED digital display (20-foot cable length), Display has built-in audible buzzer, Alerts user to people, small animals or small/low unseen objects. 4 ultrasonic sensors with &quot;quick disconnect&quot, 4-state audible obstruction warning signaling, Latest design matches most dashboard curvatures Waterproof connectors (16-foot cable length), Audible warning: 3 distinct beep tones to notify the driver of the distance to an object Sensors can be painted to match the vehicle color, Extra-wide detecting angle (prevents side impacting)