EC/TDS/Salt Meter Electric Conductivity Range 0 to 199.9 micronS/cm 200 to 1999 micronS/cm 2.00 to 19.99 mS/cm TDS Range 0 to 99.9 ppm 100 to 999 ppm Waterproof Yes Automatic Temperature Compensation Yes Displayed Temperature Range 32 Degrees to 149 Degrees F Salinity Range 0 to 9.99 ppm Operating Temp Range (F) 32 Degrees to 140 Degrees Operating Temp Range (C) 32 Degrees to 149 Degrees Display LCD Auto Power Off Yes Memory 25 Readings