Functions TDS, Temp.(optional) Display 3 12 digit LED with overload indication Power Supply 230 V + 10% 50 Hz. AC TDS Range 0.00 ppm to 200 ppm Resolution 0.01 ppm on the lowest range Accuracy + 0.5% of range + 1 digit Cell const. adj. Digital 0.1 to 2.00 more...