Observation: 1-3 (red part) means watering is needed, 4-7 (green part) means soil moisture is moderate, watering time can be adjusted according to , 8-10 (blue part) means wet and no watering is required.Suitable for plantations, gardens, indoor potted plants, etc.Only suitable for soil, do not use for liquids.Tip:Do not insert the probe into hard soil.Don't stay in the soil for a long time.Clean the probe after each use to avoid rust.Colour:Black & GreenMaterial:ABS+MetalSize:145x35x30mmPackage Contents:10 x Soil Moisture TesterOnly 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.