The Variable Speed/Dimming module (shown above)  allows for the control of the Aqua Illuminations LED lighting systems as well as adding an additional 4 0-10V variable speed ports.:

• Independent control of the white and blue Aqua Illumination LEDs.
• Simulate Sunrise/Sunset, Lunar Cycle, Clouds, and Lightning with the Aqua Illumination LEDs.
• Adds 4 independent 0-10V variable speed ports to the Apex system.
• Plug and Play.  Automatically recognized when installed into the system.
• Pumps can be dynamically added/removed from the system.
• Two AquaBus connectors for flexible expansion via AquaBus.
• Comes with 3' AquaBus cable.
• Fully upgradeable.
• Led Status indicator.
• Compatible with Apex and Apex Lite systems.