This option enables the Calsense Command Center Online cloud application to communicate with controllers through a spread spectrum radio network. This network consists of one or more spread spectrum radio hubs with one or more controllers in the field with the CS3-SR option. The hub option, sold separately, manages data flow between the cloud and surrounding controllers. Spread spectrum radios can also be used as a communication path for FLOWSENSE® technology to share a single internet-connected device, programming information, and flow among multiple controllers.