3 IN 1 Multifunctional Measuring: This pH meter offers a three-in-one function, capable of measuring pH, TDS, and temperature with high precision. Simply remove the protective cover and immerse the electrode in the solution. Backlit LCD Design: The digital pH tester features a backlit LCD screen for easy reading in low-light conditions. It is equipped with 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 buffer solution automatically. A detailed user manual is included to guide you through achieving accurate and stable readings. Waterproof and Dustproof: Designed with IPX67 rating for high-level waterproof and dustproof protection. The digital pH water quality tester accurately measures pH values within a temperature range of 0°C–60°C (32–140°F). 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: Light reflection and differences in display screens may cause slight variations between the color of the item in images and the actual product. Measurement error tolerance is +/- 1–3 cm.