Reliable Measurement: With its quality 3-in-1 Combination pH electrode and the advanced digital processing technology, the measuring of pH and temperature is quick, accurate and stable (accuracy: +/- 0.01 pH, range: 0 to 14.00 pH). Splash-proof and Dust-proof structure design, ideal for use in harsh environment.Intelligent Functions: Quick and easy Auto Calibration: automatically recognizes 6 types of pH standard solutions. 0 to 100?C auto temperature compensation. 50 groups of data storage. Max/Min measuring mode available, alternately displaying the maximum and minimum readings.Features: - Equipped with 201T-F 3-in-1 Combination pH Electrode, Auto Temp. Compensation, measuring pH and temperature simultaneously- Advanced Auto Calibration Mode with Calibration Guide and Self-Diagnosis- Advanced digital processing technology helps generate quick and stable readings- IP54 Spill-proof and Dust-proof, durable and reliable- Comes with easy-to-install electrode holder and pre-mixed calibration solutions- 50 Groups of Data Storage