Product picture - Meridian Technologies DigiFlex DR-2W4A 4A-SFP 2-Channel 10-Bit, 7 MHz NTSC PAL Video and 4-Channel Bidirectional Audio System Receiver Card Meridian, Technologies, DigiFlex, DR-2W4A, 4A-SFP, 2-Channel, 10-Bit, 7, MHz, NTSC, PAL, Video, 4-Channel, Bidirectional, Audio, System, Receiver, Card Click the image to close this page