Model Number: ez-9909 Display Type: Digital With Backlight: YES Multi-functional water quality tester Conductivity measurement range: 0 to 10000uS/cm, 10.01-19.99ms, 20.1-400ms/cm; accuracy: 2% of reading TDS measurement range: 0 to 1000ppm, 1000ppm to 10000ppm, 10.1 to 200.0 Salinity measurement range: 0.00 to 25.00%; resolution: 0.01% pH measurement range: 0.01-14.00pH; resolution: 0.01pH; accuracy: 0.05pH Color: As shown Material: Plastic Package Contents: 1 x 5 in 1 Water Quality Tester (with backlight), 1 x English Manual Only the above package content is included; other products are not included Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3cm When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and description, detailed information about the product, including its features and specifications, has been provided We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please . We are here to help and will do our best to assist you Thank you for choosing our product. We hope you enjoy it