Infinitus Voice Controller-Expander is an optional component of the 19” rack mounted Impact Voice Evacuation System. The Controller-Expander is identical to the Impact Controller with significant hardware and functional limitations. Functionally, the Infinitus Voice Controller-Expander works as a network hub for additional L-Net devices, such as microphone stations. In terms of interfacing, the Controller-Expander only features a DC power input and network ports (Global Network and Local Network).