Product picture - Meridian Technologies DigiFlex DR-2V4C 4C-SFP 2-Channel 8-Bit, 7 MHz NTSC PAL Video and 4-Channel Bidirectional Contact Closure Receiver Card Meridian, Technologies, DigiFlex, DR-2V4C, 4C-SFP, 2-Channel, 8-Bit, 7, MHz, NTSC, PAL, Video, 4-Channel, Bidirectional, Contact, Closure, Receiver, Card Click the image to close this page