Feature: 1. [Highly Sensitive Probe] PH sensor uses a highly sensitive probe, insert the probe into the soil, you can measure the desired value. 2. [Plug And Play] Soil PH meter use without batteries, plug and play, simple operation can test the PH value of the soil. 3. [Value Meaning] The probe of the detector in the middle is neutral soil (PH value of 7), to the left for alkaline soil. To the right for acidic soil. 4. [Object Of Use] Detector only tests soil, etc. It is not applicable to dry flour, small stones, wood and wood chips, etc. 5. [Convenient] Soil PH analyzer is made of ABS material, hard and reliable, small size, light weight, very convenient and handy. Specification: Item Type: Soil PH Meter Material: ABS Gross Weight: Approx. 28g/1.0oz Product Length: Approx. 14cm/5.5in Probe Length: Approx. 9cm/3.5in. Package List: 1 x Soil PH Meter1 x Instruction Manual Note: 1.Proper watering will be more accurate when testing the soil.2.This product only tests clay and soil, etc. It is not applicable to dry flour, small stones, with blocks and wood chips, etc.3. All data are measured manually, and there are certain errors in the measurement results.