I upgraded to the Apex since I travel. I used these two in conjunction to control my tank. I also have a BRS Double Junction Lab Grade Probe which was used with the RKL that I will include with the ReefKeeper. The probe is approximately two months old and is stored in proper liquid currently. I literally took it out and placed in solution. There is also a switch connection (two wire bare) that plugs into the SLX.
This setup controlled my power heads, refugium light, fan, return pump, skimmer, ATO, & heater. Has feed mode on the local display and you can use myReef 2.0 to connect to your computer with the SID V2 (you will need to re-name the ports using myReef).
ReefKeeper Lite Plus W/pH probe (MFG Date 2016): $200 shipped (lower 48)
Kessil A-Series Controller: $75 shipped (lower 48)
This setup controlled my power heads, refugium light, fan, return pump, skimmer, ATO, & heater. Has feed mode on the local display and you can use myReef 2.0 to connect to your computer with the SID V2 (you will need to re-name the ports using myReef).
ReefKeeper Lite Plus W/pH probe (MFG Date 2016): $200 shipped (lower 48)
Kessil A-Series Controller: $75 shipped (lower 48)