It can transmit audio and video synchronization, global positioning and wireless audio and video in real time. At the same time, there are many interfaces reserved on the host computer. It can be connected with on-board equipment such as vehicle display screen, IC truck airplane, signal priority control system, passenger flow statistics system and so on. It can be widely used in bus, long-distance passenger transport, school bus, engineering vehicle and container car. Travel buses, logistics cargo, police law enforcement vehicles, trains, subway, ships, aircraft and other mobile means of transport.