The Reef Brite Hydros LED interface enables Hydros controller users to schedule and control XHO and Lumi Lite series lights through the Hydros app. This interface provides seamless dimming and control by communicating with your Hydros controller via a 0-10V output. Make the most of the Hydros app's exciting features with the Reef Brite Hydros LED interface. *Requires a 0-10v Quad Cable.