Recording the call: Using the TRB can realize the process of call. Two ways to startup. a. auto-recording: When you pick up the telephone, the TRB will record automatic and when you put down it will stop recording. Th... - Update: 2008-09-26

*Within the visual range, the reliable transmission distance can reach 500m *Offering a transparent data interface, it is suitable for any standard or non-standard user protocols; *Auto filtration of false data produced in the air, and able to tr... - Update: 2008-09-26

Dear Manager: Our company is an industry leader in the design, development and production of high quality security systems and components.Our products are including DVR card,digital video recorder,video capture card, camera lenses, CCD and some... - Update: 2008-09-26