Product picture - Meridian Technologies DigiFlex DT-2V2A4C 2A4C-SFP 2-Channel 8-Bit, 7 MHz NTSC PAL Video, 2-Channel Bidirectional Audio, and 4-Channel Bidirectional Contact Closure Data System Transmitter Card Meridian, Technologies, DigiFlex, DT-2V2A4C, 2A4C-SFP, 2-Channel, 8-Bit, 7, MHz, NTSC, PAL, Video, 2-Channel, Bidirectional, Audio, 4-Channel, Bidirectional, Contact, Closure, Data, System, Transmitter, Card Click the image to close this page