The WCS-1 water content sensor allows the user to monitor the % of water / nutrients within the growing medium. The moisture level / water content is displayed in real-time on the WCS module itself, the Aqua-x and the app. That data is displayed on a graph, through the app, and helps the user visualize the dry-down time, and to make adjustments to their irrigation timers / irrigation cycles. Up to 8 WCS-1 can be connected to a single Aqua-x. When multiple WCS-1 are connected to a single Aqua-X, the displayed value on the Aqua-x and app will be the average of all of the sensors.