Wide measuring range: This pH meter can be used to measure pH in the range of 0.00 to 14.00, which is ideal for home and laboratory applications, such as beverages, liquids , etc., drinking water, swimming pools, spas, aquariums, hydroponics, etc. Automatic temperature compensation: it is not necessary to pay attention to the temperature of the test liquid, as the pH meter has built-in Automatic Temperature Compensation (ATC), so you can accurately determine the pH value of the sample at any temperature within the range of 0C to 80C (32F to 176F). High sensitivity bulb and clear display: Precision glass bulb electrode Temperature sensor helps improve reaction speed. Read clear data. Suitable for acid and alkali testing needs in various industries. Low Power Consumption: Powered by 2 x 1.5V batteries and works for over 500 hours. Battery replacement is easy, recalibration is required for battery replacement. Resolution: 0.01 PH. Detection range: 0.00~14.00 PH. Calibration method: 2-point automatic calibration. Product size: about 155 x 31 x 18mm. Product net weight: about 50g. NOTE: This tester requires 2 x 1.5V LR44 button cell batteries, which are not included in the packing list.