Model Number: ez-9909Display Type: DigitalWith Backlight Or Not: YESMulti-functional water quality testerConductivity measurement range: 0 to10000uS/cm 10.01-19.99ms 20.1-400ms/cm. accuracy: 2% of the readingTDS measurement range: 0 to 1000ppm 1000ppm to 10000ppm 10.1 to 200.0 PPTSalinity measurement range: 0.00 to 25.00% resolution: 0.01%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 products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.