mV measurement range between ±2000mV with an accuracy of 0.1 / General temperature range between -20.0 and 120.0 degrees Celsius Specific resistance measurement range between 0 ohm/cm to 100 megaohm/cm EC measurement range between 0.000 microsiemens to 1000.0 millisiemens/cm with The accuracy of 0.01 TDS measurement range between 0.000 mg/litre and 400 g/liter, the possibility of measuring and displaying salinity in terms of PSU, ppt and %NaCl units, measuring the ion concentration in the range of 10-6*10 to 9.99*1010 with the possibility of automatic calibration 5 points