Salinity Meter, Waterproof Yes, Automatic Temperature Compensation No, Salinity Range 0 to 80 ppt, Operating Temp. Range (F) 50 Degrees to 104 Degrees , Operating Temp. Range (C) 10 Degrees to 40 Degrees , Display Dual Line LCD, Auto Power Off No, Power Source (4) AG13 Batteries , Manufacturers Warranty Length 1 yr., Number of Tests 0 Features Item: Salinity Meter Salinity Range: 0 to 80 ppt Manufacturers Warranty Length: 1 yr Waterproof: Yes Automatic Temperature Compensation: No Operating Temp. Range (F): 50 Degrees to 104 Degrees Display: Dual Line LCD Auto Power Off: No Power Source: (4) AG13 Batteries Operating Temp. Range (C): 10 Degrees to 40 Degrees Number of Tests: 0 Zoro Benefits: 7,000+ Brands. Free Shipping. Hassle Free Returns.