The important difference between this offering and the unit with the LRS-350 is that this ELG-200 driver is waterproof with no fan, so no moving parts that will eventually fail and no noise, ever.
This combination unit can drive up to 3 lights at a time. The controller will handle on/off and the sunrise and sunset effects. It comes programmed with 11, 12, 13, and 14 hour light cycles. You can also install the editing software on your PC to create, edit or modify the existing programs yourself. It's very easy to learn.
There are currently three light program profiles to choose from: "Standard", "X" and "XX", all feature sunrise and sunset effects with a taper up and down from midday peak intensities. The difference between them is how long they stay at 100% intensity.
• XX: Peak intensity of 100% lasting for 6 hours at midday. Best for maximum plant growth and species that require higher light.
More detailed information can be found here.