The Tiandy TC-FA1001T/RM Video Transmitter and Receiver series utilizes frequency modulation to for high quality transmission of one channel simplex video over one multimode or singlemode fiber optical cable. All the units come in small modules or rack mount version. The cards can be inserted into our 14-slot, 19" rack mount card cage. Plug and Play design ensures the ease of installation and no user adjustments are ever required. These units are completely compatible with NTSC or PAL CCTV camera system.