Brandmotion's Commercial Backup 4 Sensor System alerts you when your truck or van is close to a loading dock wall, concrete pillar, parked car or low obstacle while in reverse. Install in line with the bumper for a true OEM appearance. Install the LED display anywhere inside the cab to let it tell you (within a 10' range) how close you are from an object. The color coded lights illuminate and the audible tone gets faster as you get closer. The weather resistant/ waterproof control box can be mounted almost anywhere. The Brandmotion Parking sensors are an excellent upgrade to navigate those tricky parking situations and to protect your people and your fleet. Designed for commercial vehicles and includes a 11' sensor harness and 49' display harness.