Fangrui Product Details 1. Large Lcd Screen: Large Digital Display, The Detection Number Is Clearly Read. 2. Ph Detecting Probe: Adopts High Precision Waterproof Probe, Can Accurately Record The Measurement Position, Sensitive Response. 3. 9v Battery Compartment: Light Weight, Low Power Consumption, Energy Saving, Long Battery Life. 4. A Variety Of Scenarios Can Be Used: Suitable For Water Quality Testing, Such As Drinking Water Testing, Swimming Pools, Laboratories, Aquaculture, Sewage Treatment, Etc.. 5. Maintenance: Shake Off The Water After The Test Is Completed, Keep The Motor Clean, If Not Used For A Long Time, Please Take Out The Battery And Cover The Electrode Protection Cover For Storage! Product Model:ph602 Measuring Range:0.00-14.00ph Resolution:0.01ph Precision:0.05ph Operating Temp:050automatic Temp Compensation:050battery:1 9v Battery (battery Not Included) Calibration Mode:manual Two-point Calibration Due To Different Batches, There May Be Differences In Product Appearance, Color, And Printed Text,