You may select either EC, CF or TDS (ppm) units for the nutrient strength and either degrees C or degrees F for temperature. The acidity or alkalinity is always measured in pH. In these guides, we will use EC (electrical conductivity) to denote either EC, CF or TDS. The date format is selectable between mm/dd/yy and dd/mm/yy formats.
(The TDS standard used for this controller is EC x 500 but it is also possible to select ECx640 and ECx700)