3 in 1 Soil PH Meter Sunlight PH Tester Garden Flowers Soil Moisture Sensor Meter Plants Acidity Humidity PH Monitor Detector Specifications: Color: Green PH Range: 3.5-8PH ( 3.5-7 Acid, 7-8 Alkaline) Moisture Range: 1-10 ( 1-3 Dry, 3-7 Nor, 7-10 Wet) Relative Light: 0-2000LUX ( 0-200 Low, 200-500 Low+, 500-1000 Nor, 1000-2000 High) Probe Tip Size: 10mm4mm4mm / 0.40.160.16 Probe Length: 180mm / 7.09 Product Dimension: 255mm62mm36mm / 10.012.441.42 How to used Step 1: Clean the surface soil layers all organic impurities which may affect the test results, such as the leaf or the root. Step 2: Clean the probe tip with wipes or abrasive cloth. Step 3: Insert the probe tip in the testing soil, the probe tip should LEVEL with root. Step 4: Reading the result when the value is stable Step 5: Testing it again on the different place of the testing soil, then calculate the average value. Package Included: 13-in-1 Soil Test Meter