<p>ZM 2100 is the ZM 2000 system master unit that includes a preamplifier with 6 zones selection without internal amplifier. It is based on a dual bus architecture, where the first bus is mainly dedicated for selective / all-call paging, while the second bus is for music distribution (or other signals). Toggle buttons turn on / off the second bus (music) on each zone and logic inputs / outputs (GPI / GPO) are available to interface the system with other devices.</p>
<p>ZM 2100 allows to choose either a power-sharing configuration by using one or two external amplifiers (the second is needed to keep music in zones not paged) for all the 6 zones or to use an amplifier (or more) for each zone. It has input connectors for audio sources, can manage priority and route the two buses to the system zones.</p>