Item Type: PH Meter Material: ABS Battery: CR2032 button battery x 2 (shipped without battery) PH: 0.00 to 14.00pH Temperature: 0 to 50 (32 to 122 ) 1HIGH ACCURACY: The pH tester combines high sensitivity glass electrode components with fully intelligent chips, achieving a measurement accuracy of 0.01 pH, providing you with fast, accurate, and stable measurement results. 2AUTOMATIC TEMPERATURE COMPENSATION: Temperature can affect the pH value of the solution. The pH detector supports automatic temperature compensation and can calibrate the pH value based on water temperature, enabling you to obtain accurate and stable readings under any conditions. 3LCD HD DISPLAY: A pH meter suitable for hydroponic cultivation, equipped with an LCD digital display, large backlit screen, and data retention function, making it easy to view both day and night. And the measurement is accurate and the display results are clear. 41 CLICK CALIBRATION: Automatic calibration with buffer recognition function. Press the CAL key for 6 seconds to enter calibration, and then press to select the powder corresponding to 6.86, 4.01, and 9.18 to complete the calibration. 5WIDELY USED: IP67 waterproof and dustproof design with powerful functions, this water quality tester is suitable for damp environments such as kitchens, hydroponic rooms, laboratories, and outdoor environments. Test the pH of drinking water, tap water, swimming pools, aquariums, bathtubs, spas, wine, beer, and other liquids anytime and anywhere. 6PORTABLE MINI PH METER: Pen sized, you can carry the pH meter with you wherever you go. By effectively measuring the pH value of water, it helps you maintain better health. 1 x Test Pen 1 x Manual