A modular ceiling system has uniformly appearing devices supported by a channel or a ceiling in an aesthetically pleasing pattern with a single network and control system. The channel or ceiling has uniform sized and shaped openings into which a plurality of uniformly sized and shaped devices is fitted. The devices share a common communication protocol and power source. Each of the devices is connected to a central control system having the same communication protocol as the devices. A network connects the central control system and all of the devices together allowing communications between the central control system and the devices and among the devices using the common communication protocol.