Product picture - Meridian Technologies DigiFlex DR-4V1J 1J-SFP NTSC PAL Video and 2-Wire Bi-directional RS-485 Data Receiver Card Meridian, Technologies, DigiFlex, DR-4V1J, 1J-SFP, NTSC, PAL, Video, 2-Wire, Bi-directional, RS-485, Data, Receiver, Card Click the image to close this page