Feature: 1. ATC temperature compensation function can automatically compensate the water temperature to 0‑60°C state detection. 2. Small size and easy to carry. High accuracy, stable and reliable work, convenient to put in the pocket when going out. 3. Amazingly accurate and widely used. With ±0.01PH automatic calibration, and 5 minutes intelligent shutdown. 4. The outer shell adopts ultra‑high waterproof design, so there is no need to worry about the deviation of the measured value due to other influences. 5. Press TEMP/CAL to switch PH value and Celsius, Fahrenheit at will, easy to use. This pproduct is suitable for many field of using. Specification: Item Type: Water Quality Tester Material: ABS Weight: Approx. 95g / 3.4oz Battery Attributes: 2 x 1.5VLR44 Button Battery (Not included)PH Value Test Range: 0.00~14.00PH Celsius Range: 0-60°C Fahrenheit Range: 32~140°FUses: This product is widely used in chemical industry, metallurgy, environmental protection, pharmaceutical biochemistry, food, aquarium, aquaculture, water treatment, which should measure the pH value of the solution and monitor and drink in the field. It is a good helper for your life, work and travel. How to use: ON/OFF: Turn on the light button. Press TEMP/CAL button to switch PH value, Celsius °C, Fahrenheit °F at random Accuracy at ±0.01PH, automatic calibration, 5 minutes, intelligent shutdown The test water temperature is more accurate at about 25°C. Different temperatures will produce slight deviations in the results. The ATC temperature compensation function can automatically compensate the water temperature to 0-60°C for detection. . Package List: 1 x Water Quality Tester (Battery Not Included)1 x Manual Note: