Conductivity Meter Electric Conductivity Range 00.0 uS/cm to 199.9 mS/cm TDS Range 0.1mg/L to 199.9g/L Waterproof IP54 Automatic Temperature Compensation Yes Operating Temp Range (F) 32 Degrees to 104 Degrees Operating Temp Range (C) 10 Degrees to 40 Degrees Display LCD Backlight Auto Power Off No Memory 30 Data Sets Temperature Compensation Range Automatic or Manual Calibration 3 point Power Source (4) AAA Batteries Includes Electrode (STCON3)