Model Number: ez-9909 <br> <br>Display Type: Digital <br> <br>With Backlight Or Not: YES <br> <br>Multi-functional water quality tester <br> <br>Conductivity measurement range: 0 to10000uS/cm 10.01-19.99ms 20.1-400ms/cm. accuracy: ±2% of the reading <br> <br>TDS measurement range: 0 to 1000ppm 1000ppm to 10000ppm 10.1 to 200.0 PPT <br> <br>Salinity measurement range: 0.00 to 25.00% resolution: 0.01% <br> <br>PH measurement range: 0.01-14.00pH, resolution: 0.01pH, accuracy: ±0.05pH <br> <br>Colour: <br> <br>Material:plastic <br> <br>Package Contents: <br> <br>1 x 5 in 1 Water quality tester(with backlight) <br> <br>1 x English manual <br> <br>Only the above package content, other products are not included. <br> <br>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.