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, Manufacturers Warranty Length 1 yr, Number of Tests 0