Back up your vehicle safely and with confidence. Wireless backup guidance system with 2 1/2in. digital display shows the distance to the nearest object behind vehicle in feet or meters. Detects objects from 1 to 6 1/2 ft. Alarm sound increases in intensity as distance to object decreases (sound can be turned off). 500-ft. range between sender and receiver allows sensor to be used on semis and trailers Includes 2 rear sensors that mount on bumper
