Xpress 512 is a self-contained DMX-512 interface for the ShowXpress software. The interface is capable of transmitting one universe of DMX and works on both Windows and Mac OS X platforms. Multiple units can be connected for multiple universes of control. Users can store and playback one show without a computer or unlimited shows with a computer. Xpress 512 Plus brings you the same capabilities of the Xpress 512, plus an external triggering that is available via a mini-DIN connection or an optional infrared remote. An internal calendar can also trigger playback at a specific time without a computer.