Conductivity Meter, Electric Conductivity Range 0 to 1999 uS/cm, Waterproof IP67, Automatic Temperature Compensation No, Operating Temp. Range (F) 32 Degrees to 104 Degrees , Operating Temp. Range (C) 10 Degrees to 40 Degrees , Display 1 Line LCD, Auto Power Off Yes, Power Source (4) AG13 Alkaline Batteries, Manufacturers Warranty Length 1 yr, Number of Tests 0