AUTO CALIBRATION - This digital pH meter is factory calibrated to provide fast and accurate results. The digital pH tester features automatic temperature compensation that adjusts according to water temperature and quality, delivering pH readings almost instantly. HIGH ACCURACY - The water pH meter is equipped with a sensitive electrode sensor for precise pH level detection. The included detailed manual guides you on achieving the most accurate and stable readings, ensuring proper pH balance in pools, hydroponic systems, drinking water, and more. AUTOMATIC TEMPERATURE COMPENSATION - The digital pH meter has an automatic temperature compensation feature that adapts to water temperature and quality, enabling quick and reliable pH measurements. WIDE RANGE OF USE - This pH meter comes with a high-quality glass pH probe, suitable for various applications including drinking water, pools, aquariums, RO systems, spas, hydroponics, food, wine, and beer production. It is an ideal testing tool for both home and laboratory use. FAST AFTER-SALES SUPPORT - If you encounter any quality issues with the product, please . We are committed to resolving your concerns within 24 hours.