Pool Salt Tester, Digital Salinity Meter, High Accuracy 5 In 1 Salinity Tester For Salt Water,ip67 Model Number: ez-9909Display Type: DigitalWith Backlight Or Not: YESMulti-functional water quality testerConductivity measurement range: 0 to10000uS or cm 10.01-19.99ms 20.1-400ms or cm. accuracy: 2 percent of the readingTDS measurement range: 0 to 1000ppm 1000ppm to 10000ppm 10.1 to 200.0 Salinity measurement range: 0.00 to 25.00 percent resolution: 0.01 percent PH measurement range: 0.01-14.00pH, resolution: 0.01pH, accuracy: 0.05pHColour:As shownMaterial:plasticPackage Contents:1 x 5 in 1 Water quality tester(with backlight)1 x English manualOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is 1-3cm.