A. Model Number: ez-9909 B. Display Type: Digital; With Backlight: YES C. Functions and Specifications: - Conductivity measurement range: 0 to 10000 μS/cm, 10.01-19.99 ms, 20.1-400 ms/cm; accuracy: ±2% of the reading - TDS measurement range: 0 to 1000 ppm, 1000 ppm to 10000 ppm, 10.1 to 200.0 PPT - Salinity measurement range: 0.00 to 25.00%; resolution: 0.01% - pH measurement range: 0.01-14.00 pH; resolution: 0.01 pH; accuracy: ±0.05 pH D. Other Information: - Colour: As shown - Material: Plastic - Package Contents: 1 x 5-in-1 Water quality tester (with backlight), 1 x English manual (only the above items are included; other products are not included) - Note: Light and different displays may cause slight color differences between the item in the picture and the real thing; the measurement error may be +/- 1-3 cm