Product picture - Meridian Technologies DigiFlex DR-8A4D 4D-2 4-Channel Bidirectional RS-232 Data and 8-Channel Audio System Receiver Card Meridian, Technologies, DigiFlex, DR-8A4D, 4D-2, 4-Channel, Bidirectional, RS-232, Data, 8-Channel, Audio, System, Receiver, Card Click the image to close this page