Gefen EXT-DVI-FM1000 Blue AV extender

DVI FM 1000 Extender Extend DVI over One Strand of Fiber Cable -- up to 3,280 feet (1km) away
The DVI FM1000 Extender extends your DVI display up to 3,280 feet (1km) away from your video source, with only two tiny transceivers required, using a 100% optical SC fiber solution with a single strand of fiber optic cable.

Automatic EDID Programming enables quick and correct synchronization of the video source to the display without any manual configuration needed. It's a great way to extend DVI video easily and unobtrusively.

How It Works
The DVI FM1000 Sender unit plugs into a DVI port (either a computer source or another device transmitting a DVI signal). The DVI FM1000 Receiver unit plugs into a DVI display. A single strand of multimode SC fiber optic cable connects the sender to the receiver. Power is connected to the FM 1000 receiver using the 5V wall adapter and crisp, vibrant DVI video appears on the DVI display.

Optical signal transmission provides immunity from electromagnetic interference (EMI).