EASY TO FIT INLINE TO ALL SIZES OF ECO-MAX LED LIGHT - digital LED lighting controller for Eco-Max LED Light and also Aquatropic LED, to create your own lighting preferences PLUG & PLAY SETUP - fits inline on all Eco-Max models; all you need is in the kit Max LED Models AQUARIUM LIGHTING CONTROL AT YOUR FINGERTIPS - features include 24 hour digital clock display, brightness control, sunrise & sunset option, lightning feature, cloud feature, demo mode and maintenance reminder CHOICE OF FITTING OPTIONS - the digital controller can be fitted either with the supplied sucker mounting cradle or by hanging by the hook hole at the top of the unit HANDY MAINTENANCE REMINDER SYSTEM – never worry about forgetting your regular maintenance regime again, this handy controller can be set for a 1 to 31 day reminder countdown and will fast blink on maintenance day (press to reset)