[-color LCD color change function] This 2-in-1 PH tester will display different LCD display colors according to the detected PH value.PH value is displayed as red when 0-4, green when 4-8, and blue when 8-14. It allows you to quickly and intuitively understand the PH test results. [High precision sensor] PH meter control chip and fully waterproof ATC sensor - more durable. intelligent IC to high cost performance and high stability. For testing the pH of almost all liquids. Perfect for measuring solution/water pH and temperature. Suitable sources, soilless culture, aquariums, hydroponics, laboratories, spas, swimming pools and other water . [Automatic temperature compensation] This PH tester does not need to care about the temperature of the liquid being measured.The PH meter has automatic temperature compensation, which can be adjusted according to the water temperature and water quality. Test temperature is / (switchable units). [Easy to use] Turn on the switch, put the probe into the water and stir (so that the small glass ball is in full contact with the liquid), you can read the value when the value is stable. pH meter has zero power consumption when it is turned off - more power saving. [Packing List] 1 x pH meter. Product use requires 1 x CR2032 battery. (Included in the product) Small and portable with a storage case to keep you safe and protected while you are . Power Suplly:1 x CR2032 battery(included batteries) Colour:Red Material:plastic Package Contents: 1set * pH meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.