Not sure if the RKE has them, but I know the aquacontroller has two ports for low voltage devices only. Previously I had my aqualifter (used for top off) on a high voltage outlet and nearly overflowed my sump because even though it was technically off, it was still pulling enough voltage to keep the pump running.

I have heard the RKE allows you control things down to the second, is that true? You cannot do to the second control on the Aquacontroller, which absolutely sucks, especially if you plan to use it for dosing.