1[DIGITAL DIAL] It adopts a large digital dial, which has wide scale intervals, clear scales, and more convenient readings, making it easier for you to grasp the soil conditions. 2[SUPPORT TRANSFER SWITCH] Support adjustment switch, you can adjust the humidity value, H value, and fertility value at will according to the current environment and plant needs. 3[DOUBLE NEEDLE DETECTION] Adopting double needle design, it can make the detection and analysis of soil faster and more accurate, and it is convenient to record and measure. 4[HIGH QUALITY MATERIAL] Made of high quality ABS and iron, it is durable and stable, can effectively protect the core components, and has a long service life. 5[WIDE SCOPE OF APPLICATION] It is suitable for horticultural planting, tree planting in woods, greenhouse planting, and agricultural planting. Item Type: Soil Meter Product Size: Approx. 200x56x29mm / 7.9x2.2x1.1in Material: ABS, Iron Weight: Approx. 90g / 3.2oz Probe Length: Approx. 115mm / 4.5in Humidity Range: 1-10 (1-3 Dry, 4-7 Suitable, 8-10 Wet) Soil Fertility Range: Less Fertility State: Yellow Ideal State: Green Excessive Fertility State: Red PH Range: 4-8.5 PH (4-6.5 Acidic, 7-8.5 Alkaline) Application: It is suitable for horticultural planting, tree planting in woods, greenhouse planting, and agricultural planting. 1 x Soil Meter