Product picture - Meridian Technologies DigiFlex DT-4V1F 1F-SFP 4-Channel NTSC PAL Video with 1 Bidirectional RS-422 Data System Transmitter Card with SFP Connector Meridian, Technologies, DigiFlex, DT-4V1F, 1F-SFP, 4-Channel, NTSC, PAL, Video, with, 1, Bidirectional, RS-422, Data, System, Transmitter, Card, with, SFP, Connector Click the image to close this page