This YueYueZou Car Reverse Backup Radar System consists of 4 Ultrasonic sensors, digital control box, and LED display, making the job of parking any vehicle much easier. It auto detects the distance between the car and back obstruction through the sensors installed at the rear bumper of the car. It helps to avoid the dangerous and costly collisions that occur so easily behind the wheel. Features: - 4 sensor system, double CPU and advanced chipset for enhanced coverage and detection - With colored LED display - Help to prevent dangerous and costly collisions, enhance the safety features with simple installation. - Help to provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle. - Step by step alarm with black and white display - The detector of the radar perfectly matches the car body. - Adaptive environment technology. - Anti-freeze and rain proof. - Easy to install. - A saw drill head included. Package Contents - 4 x Parking Sensors with 2.4m Line - 2 x Double Side Sticker - 1 x Main Control Box - 1 x LED Display Indicator - 1 x Hole Saw - 1 x 1.2 m Power Cable YueYueZou - is a registered trademark protected by the US Trademark Law. YueYueZou products are sold by authorized sellers only.