When using, be careful not to insert the probe into the stone, and do not use too much suitable force, otherwise the electrode probe be easily damaged. After use, please wash it with clean water and dry it with a rag.It cannot be inserted in the soil suitable for a long time, so as not to damage the electrode probe.This product is only suitable suitable for soil testing. It is not suitable suitable for liquid, dry flour, , sawdust, bark, etc., and soils with extremely low soil density, loose soils with poor conductivity, and mixed soils.This product is most suitable suitable for detecting nutrient soil, and the detected value be more accurate. suitable for soil, red soil and other soils with low density or too muddy, the meter needle may not move due to the poor conductivity of the soil, and you can change the test. Environment recheck.This product cannot be soaked in water, and cannot be wiped with solubility, so as to avoid vibration, impact and extrusion of the product, which may affect the accuracy of measurement or damage.Display Type: DIGITALScope 1 use: warm and humid flower bedsScope 2 use: courtyard gardensScope 3 use: greenhouse plantingItem number: SPH027Type: Pointer type soil moisture meterScope of application: plant and grass soil pot, etcColour:GreenMaterial:PlasticPackage Contents:1 * hygrometerOnly 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.