DSJ-D9 is Shenzhen City Granville electronic technology limited company research and development of a single law enforcement police video and audio recorder, contains multiple most new audio processing technology, complete function, reliable performance, with independent intellectual property rights, patent right. Not only the traditional digital camera, camera, sound recording, but also a new laser positioning, white lighting, infrared auxiliary functions, with a small, flexible key characteristics, can be widely used in public security, armed police, law department, industry and commerce, taxation and other law enforcement departments. Law enforcement officers in the field of law enforcement equipment can be used to record the scene, collect evidence, regulate the behavior of law enforcement at the scene, reproduce the scene, to ensure the accuracy of law enforcement, impartiality.