Product picture - Meridian Technologies DigiFlex DT-2V4C 4C-SFP 2-Channel NTSC PAL Video and 4-Channel Bidirectional Contact Closure Transmitter Card with SFP Connector Meridian, Technologies, DigiFlex, DT-2V4C, 4C-SFP, 2-Channel, NTSC, PAL, Video, 4-Channel, Bidirectional, Contact, Closure, Transmitter, Card, with, SFP, Connector Click the image to close this page