■ Measure PH value and temperature ■ Automatic temperature compensation ■ Temperature unit conversion function ■ Used for PH measurements like water or paper ■ Waterproof button, more than 20,000 press times working life ■ Calibration method can be selected for multi-point calibration or single-point calibration ■ Electrode loss can be viewed for timely replacement of the electrode head ■ ASTM and European standard are available ■ Automatic power off