13x200MM thick electrode - The upgraded electrode provides improved accuracy and is made with high-quality resin and metal materials, which are easy to clean. It can be inserted into soil up to 8-20CM deep and offers wide application versatility. Best for soil quality management - The soil tester is reliable and convenient, enabling long-term stable and accurate measurements. With backlight function - The screen layout is clear and organized, with backlight illumination at the top of the display. Nutrient solution pH and EC readings appear on the same line for easy viewing. 6-in-1 soil tester: PH: 0.01-14.00pH EC: 0.01-10.00mS/cm Illuminance: 3, 6, 9 Humidity: 0-10 Fertility: 0-99% Temperature: 0.1-80.0 Color: As shown Material: Plastic Package Contents: 1 x 6-in-1 Soil Tester Note: Light reflection and differences in display screens may cause slight variations in the color of the item shown. Measurement error allowance is +/- 1-3cm. Only the above package content is included; other items are not part of the package.