The VRS 6 MD20 talking reversing aid is an automatic backup alert system that warns drivers of potential obstacles while backup their vehicle. Using ultrasonic echo location sonar technology the system is activated when the driver engages reverse gear. A 4 zone variable audio pulse alerts the driver of potential obstacles. The audio pulse intensity increases and the audio frequency changes as the vehicle backs closer to the obstacle.
Additionally and exclusively, the MD20 includes a VDI (Voice Distance Indicator) module and uses an audible voice to inform the driver how close the rear of the vehicle is from the obstacle calling out the distance in feet starting at 12ft, then 9ft, 6ft, 5ft, 4ft, 3ft, 2ft, 18 inches, 12 inches, and if you get less than 12 inches it sounds "CRASH".