Product picture - Meridian Technologies DigiSlim FR-4V1C1F 1C1F-2 4-Channel NTSC PAL Video, 1-Channel Bidirectional Contact Closure, and 1-Channel Bidirectional RS-422, Manchester, or Bi-Phase Data Receiver Card Meridian, Technologies, DigiSlim, FR-4V1C1F, 1C1F-2, 4-Channel, NTSC, PAL, Video, 1-Channel, Bidirectional, Contact, Closure, 1-Channel, Bidirectional, RS-422, Manchester, or, Bi-Phase, Data, Receiver, Card Click the image to close this page