Feature: Widely used to test the pH of solution/water. Easy calibration of pH with just a mini-screwdriver. Electrode probe can be replaced, ATC function. Large and clear LCD with backlight, easy to read and accurately testing functions. Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. Speciation: Range: pH: pH 0.00 ~ 14.00Analytical: pH: 0.01 pHAccuracy: pH: 0.1 pHTemperature compensation: 0~ 50C (32F~ 122F)Power: DC 6V (power adapter)Plug type: EUInput voltage: 220VBattery: 4 x 1.5 V AG13 / LR44 button battery (Not included)Color: BlackMaterial: ABSPH electrode line length: 118cm / 46.5inch (appr.) Screwdriver length: 9.5cm / 3.74 inch (appr.) Acidity meter size: 7.5 x 5.5 x 2.2cm / 2.95 x 2.17 x 0.87 inch (appr.) Package included: 1 x Acidity meter1 x User Manual1 x PH electrode1 x AC and DC adapter1 x Sucker1 x Mini screwdriver