and it can email you if a problem or page you i think, not like my boss is gonna let me leave work unless the tank is leaking, i guess the rest have a few more option's, i use mine to control light's monitor heat, monitor ph turn my sump fan on if temps, as well as could program it for other stuff
Dave, you know what you want the unit to do for you. Many other, like myself, use them to read the temp, PH and control all of the lights/heater/chiller and whatnot. It's more of a personal decision depending on what you keep in your tank and what you want the controller to do for you.
I love my ACjr's
If you Google aquarium controller comparison..you'll get a ton of info listing side by side of the differences in the units available out there.
I like the look of the RKE. I will let you know how it works when I get one, on paper , sounds like a nice value. I always had ReefKepers the original & the 2. they are not perfect, but the customer service is excellent in my experience.
as well is with aquacontroller, any questions i have hd i get a reply next day they all really do the same thing the elite and other's just offer a few more thing's that i dont need, nor felt the needs to spend the few hundred extra dollars for them
RKE includes a Ph & ORP probe, I think two float switches so it also functions as an ATO device. those three things plus a RK2 would bring you close to the $500 price tag. but I read it's full of bugs still, so if you cant wait for them to fix, go with the AC.
the customer service was morethan just answering silly questions, but replacing the product past warranty..... thats putting yourself behind what you make