Conductivity Meter, Electric Conductivity Range 10 to 9990 uS/cm, Waterproof Electrode Only, Automatic Temperature Compensation Yes, Operating Temp. Range (F) 32 Degrees to 122 Degrees , Operating Temp. Range (C) 0 Degrees to 50 Degrees , Ion Specific Electrode Range No, Display LCD, Auto Power Off No, Memory No, Temperature Compensation Range Automatic From 32 Degrees to 122 Degrees F (0 Degrees to 50 Degrees C), Calibration 1 point (1413 uS/cm), Interface No, Power Source 9V Battery