1. It is a nice CCTV tester monitor , portable and easy to carry, it can perfectly test AHD camera ,TVI camera and CVI camera up to 8MP, this monitor very suitable for upgrading the old CCTV analog signal system. This CCTV tester also supports UTP cable test, You can also use RS-485 to control the PTZ camera ect 2. The monitor of this multi-function CCTV tester also supports VGA input and HDMI input. You can use the monitor and DVR to work together conveniently and quickly. The CCTV tester monitor has a mini mini size: 5inc display screen, the screen is protected by a film, There are rubber protections on both sides , you can use it in different environments. free tool kits and cables are provided Make sure you use it more conveniently 3.The mini CCTV monitor suitable for the CCTV system can ensure that you complete the work faster and better. The large-capacity batteries can keep the CCTV monitor working for a long time and it is easier to replace. This monitor has a DC 12V pow