Intelligent Parking Assistant System with 4 Dolphin Grey Ultrasonic Rear Sensors Description:Parking sensors are designed to alert the driver to unseen obstacles during parking. The package includes 4 sensors which need to be wired to a control box, whilst reversing the sensors will send signals to the control box wherever an object comes within the sensors range, the control box in turn relays this information to the remote display at the front of the vehicle (monitor must be powered via cigarette lighter). With the digital display you can see the distance between the sensors and the object and the audible warning provides clear guidance whilst your attention is not on the display. Features:4 ultrasonic sensors3.5 inch digital LED displaySound indicatorHigh-tech processing: wireless between the main unit and the display
