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With Backlight Or Not : no Model Number : Soil meter Display Type : Digital Power : NO 1. Before inserting the soil please soak the soil with water. The probe should be inserted into the soil 2/3 of the depth (above 10cm) so that the measurement is more accurate. If only inserting two probes into it will not be effective and the measured value will not change! 2. When using make sure that you don't touch the stone when inserting the electrode and don't use too much force otherwise the electrode will be easily damaged. Wipe and clean up in time after use.(It is strictly prohibited to directly probe into the water for measurement) 3. It cannot be used in the soil for a long time to avoid damage. 4. This product is only suitable for testing soil and soil. It is not suitable for dry flour pebbles organic wood sawdust fleshy granules and coconut shells. 3 in 1 soil PH meter Moisture/Light/pH Test Acidity humidity sunlight garden plants Flowers moist tester instrument tool 96558159-6848242784