Features： 1、Wide Application: This water quality tester provides highly accurate measurement of EC, SALT, TEMP and S.G. 2、High Accuracy: This water tester features high accuracy and wide range in measuring. Salinity and temperature can be measured at the same time. 3、Temperature Compensation: This salinity meter is designed with temperature compensation since the temperature may affect the accuracy. 4、Auto Power Off: This water tester will automatically power off after 5 minutes without any operation, saving the energy. 5、Large LCD: This salinity tester is equipped with large LCD display that can display 4 digits and corresponding physical quantity. Specification： Item Type: Digital Salinity Tester Material: ABS Range: EC: 0 to 19900us/cm. 0 to 199.0ms/cm(SALT 785) Salt: 0 to 10000ppm, 0 to 199.9ppt S.G: 0.990 to 1.400 Temperature: 0 to 80℃ (32℉ to 176℉) Resolution: EC: 1us/cm(<1000us/cm), 10us/cm(>1000us/cm) 0.1ms/cm Salt: 1ppm (<1000ppm), 10ppm(>1000ppm), 0.1ppt S.G: 0.001 Temperature: 0.1℃ (0.2℉) Accuracy: TDS, EC, SALT: ±2%F. Temperature: ±1.0℃ Battery: 3 x 1.5V (AG 13) (Battery Not Included) Temperature Compensation: 0℃ to 50℃. Operating Temperature: 0℃ to 50℃ Product Size: Approx. 235 x 45 x 45mm / 9.3 x 1.8 x 1.8in ( Manual Measurement, Slight Error May Exist ) Application: Ideal for Home and Laboratory PH Testing Applications, Including Drinking Water, Swimming Pools, Pond, Beer Brewing, Kombucha, Aquariums, Hydroponics, Laboratories, Food Processing, Etc. Package List： 1 xDigital Salinity Tester 1 x User Manual