Product picture - Meridian Technologies DigiFlex DR-4V2D 2D-2 4-Channel NTSC PAL Video and Bi-Directional RS-232 Data Receiver Card Meridian, Technologies, DigiFlex, DR-4V2D, 2D-2, 4-Channel, NTSC, PAL, Video, Bi-Directional, RS-232, Data, Receiver, Card Click the image to close this page