MAR7504 4 CH TVI Mobile DVR User-friendly GUI providing easy and flexible operations. Supports connecting high-definition TVI camera. 4 analog channels of audio & video inputs connectable; each channel supports up to 720p resolution with H.264 encoding technology. Two HDD/SSD hard disks with 1T capacity can be plugged for data storage. Specialized aviation connectors ensuring signal stability. Ignition start, delay (0 to 6h) shutdown and 24-hour scheduled startup/shutdown. Software-based firewall supported.