Car tachograph tachograph by no means a simple pure market products, but has a social value products, related to people's life and property safety, related to traffic safety administration, and now more and more people have a car, driving Recorder has a very important role, I believe that the relevant state departments in the near future the mandatory introduction of relevant documents required for each installation of the car on top of a tachograph to drive on the streets, the use of software management, more effective instrument for recording at home Use to create a favorable legal environment. 1, vehicle travel time, satellite positioning records and storage capabilities; 2, automatic emergency video using (G-senser) gravity sensing, when the collision occurred in the vehicle will automatically save the video files are not overwritten deleted. 3, night vision outstanding low light performance refers to the product, not the kind of excellent products with LED light and infrared light (TS400S is one of them), and then fill light intensity nor the two headlights on, according to the fundamental less than the road, and according to the formation of reflective glass front, tachograph seriously affect sight video resolution, did not effect. 4, manually set recording (on / off): The default is off, to open, manually set. 5, tachograph loop recording feature, if there is a video is important, but even after the video shoot, then in front of the presence of important video will be automatically deleted the problem, then an emergency video design, if have an important impact simply long press a key manually, this video would be forced to save when the card is full will not be automatically deleted (press once photographed, twice the current settings will file a continuous length of time survive, grow Press 2 seconds will save five seconds after 5 seconds before the video file). 6, objective and comprehensive record of traffic accidents and acts of the various states of the vehicle, for accident analysis provides a scientific basis, to protect the legitimate rights and interests of the parties to the accident, the traffic police to facilitate law enforcement and government regulators, will monitor the video recording and playback responsible for the accident at a glance, the traffic police to deal with incidents quickly and accurately; can quickly leave the scene to restore the traffic, but also to retain the valid evidence the incident, creating a safe and smooth traffic environment.