Parameters: Product Style: Built-in Electrode Resolution: 0.01PH Detection Range: 0.00~14.00PH Calibration method: Automatic 2-point calibration Temperature compensation: Automatic ATC compensation Battery type: 2*1.5V button battery Product size: about 155*31*18mm Product net weight: about 50g Wide measuring range: This pH meter can be used for measure pH in a range of 0.00 to 14.00 which is ideal for home and laboratory applications such as beverages, drinking water, swimming pools, spas, aquarium, hydroponics, etc. Automatic temperature compensation: No need to pay attention to the temperature of the test liquid, because the ph meter has built-in automatic temperature compensation (ATC), so that it can accurately determine the pH value of the sample at any temperature within a range e from 0C to 80C (32F - 176F). High sensitivity bulb and clear display: The glass bulb electrode precision temperature sensor is intended to improve the reaction rate. Read clear data. Suitable for acid and alkali testing needs in various industries. Low Power Consumption: Powered by 2*1.5V batteries and it keeps working over 500 hours. Battery replacement is easy, recalibration is required for battery replacement. Resolution: 0.01 PH. Detection range: 0.00~14.00PH. Calibration method: Automatic 2-point calibration. Product size: about 155*31*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.