This Parking Sensor offers an ideal solution for demanding drivers who care for their vehicle and the safety of their loved ones. Hidden obstacles such as posts and flower-beds can cause serious damage to cars and children may be in danger during reverse movement. The parking sensor notifies the driver of the distance and the position of obstacles by means of an acoustic beep and visual display, The system switches on automatically when the driver selects reverse gear. the sensors work on cutting-edge ultrasonic detection technology and have been specially designed to blend in perfectly with your vehicle bumper.