Usage Tips:13x200MM thick electrode - The upgraded electrode is more accurate and durable, 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 durable 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:0.01-14.00pH EC:0.01-10.00mS/cm Illuminance:3 stages, 6 stages, 9 stages Humidity:0-10 stages Fertility:0-99% Temperature:0.1℃-80.0℃ Colour:As Shown Material:Plastic Package Contents: 1 * 6-in-1 Soil Tester 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.