The CHAOS Communications Hub allows an owner to control their subs' Mesmerizers grid-wide, and even from a web browser without having to be logged in to Second Life. All Mesmerizer functions are available remotely, including remote programming of triggers.
In addition to remote control, the Communications Hub supports "Mesmerizer Chat", which provides a group chat function for you and your subs. This chat can also be accessed from the web, allowing you to stay in touch with your subs regardless of whether you or they are currently logged in to Second Life.
The Communications Hub comes in two versions: Standard and Low-Prim. They are identical in functionality, and differ only in appearance and land impact (6 LI vs 1 LI). The Communications Hub must be rezzed in-world, so you need to own, rent, or otherwise have access to land where you can leave objects rezzed.
The Communications Hub comes with one CHAOS Communicator - a device for an owner to wear that allows in-world participation in Mesmerizer Chat and the issuing of commands from anywhere in Second Life.