An information provider system for communication with an interface controller via a wide area network, the interface controller being for managing operation of a plurality of devices at two or more properties via the wide area network, each of the devices belonging to one or more of a plurality of classes and having a unique communications protocol associated therewith, the information provider system comprising a data access layer and at least one database, the data access layer being configured to facilitate interaction by the interface controller with the at least one database on behalf of all of the plurality of devices according to a single set of rules, the data access layer also being configured to facilitate interaction by the interface controller with a property monitoring system that can generate a display that can include a user-selectable combination of device class and property.