ProjectionLink is Proxima's revolutionary new solution that simplifies projector installations and connectivity. It's the first single-wire solution that connects your computer and video sources with an installed projector. ProjectionLink includes two components: a transmitter and a receiver. The receiver is usually positioned in the ceiling and connected to the projector. The transmitter allows you to connect multiple input sources to your projector via CAT-5 cabling.
This user and installation guide provides more information about ProjectionLink, its installation and configuration.
Reference: Proxima User and Installation Guide.