Digital Aquatics has expanded their lineup of accessories to their ReefKeeper aquarium controller with the release of a brand new module, the SL2. This tiny little module features individually isolated pH and salinity ports, along with one temperature port and two switch ports that can be used to regulate an auto-top off or perform some other custom program. The salinity probe is built off a conductivity probe with temperature compensation, which is great if you have multiple aquariums in the vacinity or are gearing up for a water change and want to see how salty the new water is. Salinity is given in parts per thousand (PPT) and the entire module is upgradeable via firmware updates. The asking price for this module is set at $80 and should be hitting store shelves soon.
Found on Reefs.com