Salinity Meter, Waterproof Yes, Automatic Temperature Compensation No, Salinity Range 0 to 10 ppt, Operating Temp. Range (F) 50 Degrees to 104 Degrees , Operating Temp. Range (C) 10 Degrees to 40 Degrees , Display Single Line LCD, Auto Power Off No, Power Source (4) AG13 Batteries , Manufacturers Warranty Length 1 yr., Number of Tests 0