3 IN 1 Multifunctional Measuring: This pH meter offers a three-in-one function to measure 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. Equipped with a high-quality titanium alloy probe and glass electrode, it enables fast and convenient testing. Insert the probe into the liquid, wait one second, and read the result. High Accuracy: Includes calibration powders at pH 4.00, pH 6.86, and pH 9.18. Press the automatic calibration button to allow the meter to automatically recognize the calibration solution for quick and accurate results. A detailed manual is included to guide you in obtaining stable and precise readings. Waterproof and Dustproof: Rated IPX67 for high-level waterproof and dustproof protection, ensuring durability. The digital pH water quality tester accurately measures pH values within a temperature range of 0°C to 60°C (32°F to 140°F). The device automatically identifies calibration solutions for instant digital readings. Material: Plastic. Color as shown. Package Contents: 1 x Water Quality Monitor Tester, 3 x Buffer Powder. Note: Light reflection and display differences may cause slight variations between the product color in images and the actual item. Measurement error allowance is +/- 1-3 cm.