Product picture - Meridian Technologies DigiFlex DR-4V1F 1F-2 4-Channel Video Multiplexer with 1-Channel Full Duplex RS-422, Manchester, or Bi-Phase Data System Receiver Card Meridian, Technologies, DigiFlex, DR-4V1F, 1F-2, 4-Channel, Video, Multiplexer, with, 1-Channel, Full, Duplex, RS-422, Manchester, or, Bi-Phase, Data, System, Receiver, Card Click the image to close this page