Product picture - Meridian Technologies DigiFlex DR-AIPHONEAX2-2 2-Channel NTSC PAL Video with Bidirectional Audio and Contact Closure Receiver Card for Aiphone AX Series Intercom System Meridian, Technologies, DigiFlex, DR-AIPHONEAX2-2, 2-Channel, NTSC, PAL, Video, with, Bidirectional, Audio, Contact, Closure, Receiver, Card, Aiphone, AX, Series, Intercom, System Click the image to close this page