Feature: 1. Automatic Calibration: The pH meter has automatic temperature compensation that adjusts for water temperature and water quality, giving a pH reading almost instantly. Likewise, you can use the calibration buffer powder to calibrate the tester in one click. 2. Versatile: Ideal for home or laboratory use; ideal for testing pH balance in drinking water, swimming pools, aquariums, pass through systems, spas or hydroponics. 3. Automatic Temperature Compensation: No longer need to care about the temperature of the test liquid, such as pH. The meter has built‑in (ATC) automatic temperature compensation to accurately determine the pH of a sample at any temperature in the range of 0°C‑80°C (32°F‑176°F). 4. Lightweight and Easy To Use: Just remove the protective hat, dip the pH meter electrode into the solution, and measure at the push of a button. 5. LCD Backlight Display: The pH tester has a bright backlight LCD display, which is easy to use no matter day or night, accurate measurement and clear display results. Specification: Item Type: PH Meter Material: ABS Measuring Range: 0.00-14.00ph Accuracy: +/-0.01ph Resolution: 0.01ph Operating Temperature: 0-60℃ (32-140℉) Adjustment: 2 Point Automatic Recognition Battery: LR44 x 2 (Battery Not Included) Weight: Approx.114g / 4oz. Package List: 1 x Detection Pen1 x User Manual3 x Detection Powder Package1 x Storage Box