Crestron DM-TX-201-S DigitalMedia 8G Fiber Transmitter 201 DigitalMedia 8G Fiber transmitter and multimedia interface Built-in 2x1 AV switcher with auto-switching and analog audio-breakaway QuickSwitch HD technology achieves fast, reliable switching DM 8G Fiber output supports up to 1000 ft (300 m) cable length Connects to a DM switcher or receiver over one multimode fiber strand