Product picture - Meridian Technologies DigiFlex DT-4F-SFP 4-Channel RS-422 Data Unidirectional System Transmitter Card with SFP Connector Meridian, Technologies, DigiFlex, DT-4F-SFP, 4-Channel, RS-422, Data, Unidirectional, System, Transmitter, Card, with, SFP, Connector Click the image to close this page