Product picture - Meridian Technologies DigiFlex DT-4V2D 2D-2 Digitally-Encoded Four-Channel Video with Two Full-Duplex Rs-232 Data Channels Transmitter Meridian, Technologies, DigiFlex, DT-4V2D, 2D-2, Digitally-Encoded, Four-Channel, Video, with, Two, Full-Duplex, Rs-232, Data, Channels, Transmitter Click the image to close this page