1、Widely used to test the pH of solution/water. 2、Easy calibration of pH with just a mini-screwdriver. 3、Electrode probe can be replaced, ATC function. 4、Large and clear LCD with backlight, easy to read and accurately testing functions. 5、Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. 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 ~ 14.00 Analytical: pH: 0.01 pH Accuracy: pH: ± 0.1 pH Temperature compensation: 0°~ 50°C (32°F~ 122°F) Power: DC 6V (power adapter) Plug type: EU Input voltage: 220V Battery: 4 x 1.5 V AG13 / LR44 button battery (Not included) Color: Black Material: ABS PH 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 meter 1 x User Manual 1 x PH electrode 1 x AC and DC adapter 1 x Sucker 1 x Mini screwdriver