The MD811H is an 8-channel HD mobile digital video recorder (MDVR) featuring double systems (double communication channels) and high stability. Adopting the high-performance processor and Linux operating system, it is a core product of new-generation wireless vehicle video surveillance solutions that uses H.264 video compression/decompression, GPS positioning, and wireless data transmission technologies. The device is specially designed for mobile video surveillance of different types of vehicles, such as buses, long-distance coaches, taxis, logistics vehicles, armored cars, private cars, etc.