Abstract: A facility environmental control ("FEC") system is disclosed that communicates using an open network management protocol such as the simple network management protocol ("SNMP"). The FEC system includes a first plurality of FEC devices operable to obtain data concerning the environment of a facility and a second plurality of FEC devices operable to receive command signals and perform operations that affect the environment of the facility in accordance with the received command signals. The system further includes a control system operably connected to the first and second plurality of FEC devices, and a control system agent operably connected to the control system. In general, the control system receives data from the first plurality of FEC devices and provides command signals to the second plurality of FEC devices.