The ComNet ValueLine FVXATC1 Transmitter and FVXARC1 Receiver Series transmit a single line-level audio and contact closure signal over one multimode or single mode optical fiber. This product is ideal for applications where standard line-level audio and contact need to be transported more than a few hundred feet. Applications such as Public Address Announcements or Broadcast-Quality audio are where the FVXAT/RC1 will excel.