LTP-Lite records on a single hard drive and has no DVD burner option. Video outputs are VGA, BNC, HDMI, and Spot. There are 4 channels of audio, and alarm I/O.
LTP is a step up from LTP-Lite, and can record on multiple hard drives.
LTP-Pro records at real-time (30 frames per second per channel) at the highest resolution (D1 or 960H, depending on the model), and can record on multiple hard drives, and includes the DVD burner option.
All EA-Series and LTP-Series DVRs use the same CMS and mobile apps.