Usage Tips:13x200MM thick electrode - The upgraded electrode is more accurate and , and uses high-quality resin and metal storage materials, which are easy to clean. It can be inserted into 8-20CM soil and has a wide range of applications.Best for soil quality management - The soil tester is highly and convenient, and can achieve long-term stable and correct project measurement.With backlight function - The screen layout is neat, the illumination is at the top of the screen, the nutrient solution pH, and EC are on the same line.6-in-1 soil tester:PH:0.01-14.00pHEC:0.01-10.00mS/cmIlluminance:3 , 6 , 9 Humidity:0-10 Fertility:0-99%Temperature:0.1-80.0Colour:As ShownMaterial:PlasticPackage Contents:1 * 6-in-1 Soil TesterOnly 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.