?Widely applicable&Parking Assistance? Voltage ranging from 9V to 36V DC can be found in most large vehicles like camper, rv, truck, bus, trailer, and 5th wheel. It’s common to have trouble parking such vehicles. With Fookoo backup camera system, parking can be more convenient and safer. You can clearly see the obstacles behind. Parking lines will tell if you're going to hit. ?Split Screen&Loop Recording? Watching more cameras means less blind spots. 9-inch monitor is a comfortable size for split screen, big enough for you to see every camera. With dual/trip/quad split screen modes, you can add one more camera when you need. The system will record what is shown on the screen. When overwritten is turned on, it will cover the earliest videos automatically. Note to save the videos you need in time. ?Easy Installation&Reliable Service? When you wire the system to power supply, please note to connect red wire to ACC, yellow wire to positive power, and black wire to negative. Other trigger wires’ connection depends on your needs. If you find anything in package missing or damaged, or if you need more accessories, please seek us for help. Each message will be replied within 24 hours. We offer 30-day return, 2-year warranty, and lifetime technical support. ?Durable Waterproof Camera? This system is equipped with Fookoo newest cameras, which remove traditional infrared lights, and can present coloured pictures in low light conditions at night. The cameras are IP69 waterproof, and have a metal housing that can last for a long time. So they’re durable enough to work in most extreme weather and serve you many years. ?9” 1080P HD Wired System? Our DY903 system comes with a 1080P HD monitor, which shows vivid and clear pictures. 9” monitor doesn’t take up too much space, but you can easily see pictures and details on the screen. The system is a wired one, so you don't have to worry about some problems that can occur with a wireless system, such as freezing, delay or signal loss.