Quick and accurate readings - After switching on, simply immerse the electrode in liquid and the measurements are automatically displayed on the large LCD display. High Resolution: Measuring Range: 0-14pH, Accuracy: 0.05ph, High Resolution up to 0.01ph. You can achieve higher accuracy than other pH meters. AUTOMATIC CALIBRATION - No need for adjusting screwdriver, just finish calibration with automatic calibration button and buffer powder (not included). ATC Function: Automatic temperature compensation accounts for temperature changes automatically, direct display of values after compensation, to ensure more accurate readings. WIDE APPLICATION: Ideal for home and laboratory pH levels including drinking water, electroplating fluid, boiler water, aquarium water, swimming pool water, photo flushing fluid, well water, deep phreatic water, aquaculture, food processing and more. Specifications: Display: LCD digital display Measuring range: 0.00 - 14.00 pH Resolution: 0.01 pH Accuracy: 0.05pH Power supply: 2 x 1.5V LR44 batteries (more than 500 hours) Operating Temperature: 0~80C Calibration: automatic calibration Dimensions: 15.3 x 2.9 x 1.6 cm Weight: 52g Package Content: 1 x Digital PH Meter 1 x User Manual