GVM-7500 HD is a mobile phone surveillance application just based on iPad, which supports the full line of MARSS CCTV products: DVRs digital video servers, as well as network cameras and speed domes that support standard H.264 video codec. The key features of GVM-7500 Mobile Surveillance Application include: Real-time video preview of up to 16 channels; Swipe for PTZ control and camera movement, pinch to zoom in and out in preview mode; Support for preset activation and configuration, as well as calibration for brightness. Snapshot support; Management of up to 100 sets of devices. Device profiles can be added / deleted / modified; Support for PTZ controlThe GVM-7500 adds value to MARSS CCTV system, because enable end-users to centralize, control and manage, remotely, the CCTV system, directly from iPad.