It can effectively measure the humidity in the plant soil and master the suitable conditions for the growth of various plants; The accurate soil moisture can be read by inserting the probe into the root soil. Note: This product can only be used as a measurement for gardening, planting flowers, etc. Cannot be used as a measurement for scientific research and other areas where high accuracy is required Horticultural humidity detector/soil humidity tester 1. For soil moisture measurement, it is a good helper for gardening 2. It is convenient to use without batteries. Working principle: Measure the soil moisture of plants through the electrolysis value of organic nutrients in the soil, and insert the probe into the root to read out, without batteries. (Note: the soil should not be too loose or devoid of nutrients) Instructions: First insert the probe as deep as possible into the soil, about 3/4 of the way into the probe. Measuring range 1-10 values, values 1-3 DRY are dry, values 4-7 MOIST are suitable, values 8-10 WET are wet. Please adjust the soil moisture according to the species of plants. Precautions: 1. When using, be careful not to touch the stone when inserting the electrode, and do not use too much force, otherwise it will easily damage the electrode. 2. Wash the electrode in time after use. (It is strictly forbidden to directly extend it into the water for measurement). 3. It cannot be used in the soil for a long time to avoid damage