This Tester Is Developed For The On-Site Installation And Maintenance Of Video Monitoring System. It Can Be Used For Displaying Video, Controlling Ptz, Dc12v 1a Power For Camera, Audio Input Test, Generating Images, Capturing Data Of Rs485 And Testing Lan Cable Etc. Its Function, Easy Operation, And Portability Makes It Simple For The Cctv Technician To Install And Maintain Cctv System, Improving Work Efficiency And Get The Labor Cost Down.