... simultaneously 3.display modes:4 images,3images,2images This system is suitable for buses,cars,trucks,construction vehicles postal ... vehicles,achieving,comprehensive prespective. System is hightly integrated with industrial grade chip,shockproof and dustproof.Shell with high quality galvaniaed materials ... OHM 11. Lens Angle: 120 Degrees trailer turck parking system with 4cameras ,7inch monitor parking ...