The Hopkins Manufacturing 20195VA-CL-EN nVISION Ultrasonic Back-Up Sensor System allows you to back up your vehicle safely and with confidence. When vehicle is placed in reverse, audible and visual readout shows objects and people behind vehicle. Backup guidance system with 2.5 inches digital display shows the distance to the nearest object behind vehicle in feet or meters. Sensor detects objects from 1 to 6.6 feet, and alarm sound increases in intensity as distance to object decreases (sound can be turned on or off). The Ultrasonic Back-Up Sensor is perfect for cars, light trucks, SUVs, vans, and RVs.