Reversing isn't your strong suit? Peiying parking sensors with LED display are the solution for you! Four small sensors at the rear of the car help avoid unwanted bumps or scratches while maneuvering in the parking lot. The system automatically activates when reversing and displays the distance to obstacles. In addition to the warning on the LED display, you can optionally activate an acoustic signal that indicates the decreasing distance between your car and an obstacle with a variable intensity signal. The kit also includes: controller, drill, and cables, so you won't need to purchase any additional accessories for installation. Available in four sensor colors: Black, Red, White, or Silver.