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: Comes with calibration powders at pH 4.00, pH 6.86, and pH 9.18. The automatic calibration function allows the meter to recognize calibration solutions instantly. An included detailed manual guides you through the process for accurate and stable readings. Waterproof and Dustproof: Rated IPX67 for high-level waterproof and dustproof protection. The digital pH tester accurately measures pH values within a temperature range of 0°C–60°C (32–140°F). Automatic temperature compensation ensures reliable results despite temperature variations. 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. Light reflection and display differences may cause slight color variations between the image and the actual product. Measurement error allowance: ±1–3 cm.