Product picture - Meridian Technologies DigiCool FT-IS-DV-2ST 1-Channel Uni-Directional Video & Bi-Directional Audio Transmitter for Aiphone IS Series Network Door Station Meridian, Technologies, DigiCool, FT-IS-DV-2ST, 1-Channel, Uni-Directional, Video, &, Bi-Directional, Audio, Transmitter, Aiphone, IS, Series, Network, Door, Station Click the image to close this page