Multiparameter Meter Electric Conductivity Range 0 to 20 mS/cm TDS Range 0 ppm to 10.00 ppt Waterproof IP67 Automatic Temperature Compensation Yes Displayed Temperature Range 32 Degrees to 122 Degrees F Salinity Range 0 to 10 ppt Display LCD Auto Power Off Yes Memory No Temperature Compensation Range 0 Degrees to 50 Degrees C Calibration 1 point Interface No Interface Power Source (4) A76 Alkaline Batteries Includes Batteries Manufacturers Warranty Length 1 yr