Product picture - Meridian Technologies DigiCool FR-1W2A2C2G 2A2C2G-2 1-Channel NTSC PAL Video with 2-Channel Bidirectional Multiprotocol Data, Audio, & Contact Closure System Receiver Card Meridian, Technologies, DigiCool, FR-1W2A2C2G, 2A2C2G-2, 1-Channel, NTSC, PAL, Video, with, 2-Channel, Bidirectional, Multiprotocol, Data, Audio, &, Contact, Closure, System, Receiver, Card Click the image to close this page