The Nubix 4LT DVR is an economical solution for recording 1-4 cameras of video surveillance systems. It has four channels, USB port, MPEG4 compression to show and record the video with a speed of 120 frames per second, it also has composite video output. It also allows you to search for the video that has been recorded by date, time or calendar data or by event. The external USB port is presented as RS485, and support for TCP/IP. The DVR has a sample resolution of 720x480, and a recording resolution of 704x480 (D1), 704x240, 352x240, internal storage is 1 IDE HDD and USB port for external memory.