3 IN 1 Multifunctional Measuring: This pH meter offers a three-in-one function that measures pH, TDS, and temperature with high precision. Simply remove the protective cover and immerse the electrode into the solution. Backlit LCD Design: The digital pH tester features a backlit LCD screen for easy reading in low-light conditions. It includes a high-quality titanium alloy probe and glass electrode for fast and reliable testing. Insert the probe into the liquid, wait one second, and read the result. High Accuracy: Comes with calibration powders at pH 4.00, pH 6.86, and pH 9.18. Press the automatic calibration button to allow the meter to recognize the solution and calibrate automatically. A detailed user manual is included to help achieve accurate and stable readings. Waterproof and Dustproof: Designed with IPX67 rating for excellent waterproof and dustproof protection. The digital pH water quality tester accurately measures pH values within a temperature range of 0C60C (32140F). The device automatically identifies calibration solutions for quick digital readings. Material: Plastic Color: As shown Package Contents: 1 x Water Quality Monitor Tester 3 x Buffer Powder Note: The package includes only the items listed above. Other products are not included. Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement error tolerance is +/- 1-3 cm.