about this product: [SOIL TESTER]: The 3-in-1 Soil pH Tester lets you use scientific methods to measure light, moisture, and soil pH. You can adjust the environment for plant growth over time. [PORTABLE DESIGN]: The soil moisture meter does not require a battery, more environmentally friendly, just insert the probe (at least 10cm deep) into the target soil to get accurate data. Lightweight and portable design, easy to carry for outdoor use. [3 IN 1 FUNCTIONS]: 3-in-1 soil tester for managing gardens, shrubs, flowers, vegetables, plants, etc. Dual-needle sensing technology greatly improves the speed and accuracy of soil pH sensing and analysis. [SCIENTIFICALLY ACCURATE]: Very easy and accurate reading of moisture, pH and light levels . The 3 in 1 soil tester can measure soil moisture from 1 to 10, read light intensity from 0 to 2000, and read pH value from 3.5 to 8. [NOTICE]: This soil tester is not used to test the pH of water, it can only be used for soil. Please note that the metal probe should be wiped clean after use to keep the probe dry and clean. Product Description: Color: Green-02L. Tester 3-in-1 Soil pH / Moisture / Light. STEP: 1: Switch to Moisture / pH / Light as needed; 2: Insert two-thirds of the floor (above 10 cm). 3: Adjust the probe until the pointer on the dial oscillates slightly; 4: Check the humidity / pH / light level in the dial after 10 minutes; 5: Remove the probe from the ground and wipe it clean after each use. 6: [HUMID] Values 1-3 indicate watering is needed, 4-7 indicates moderate humidity, 8-10 indicates too wet. 7: [LIGHT] measurement range is 0-2000. The higher the value, the stronger the light intensity, according to the needs of the plant to adjust the shade. 8: [PH] the corresponding table is 8-3.5, the value of 7 is neutral, the smaller the value, the more acidic the soil. 9: No battery required. NOTE: Do not force it into very hard ground or touch hard objects; Do not use it to test pure water or other liquids; Do not leave the meter in the ground for a long time; If the soil is too dry and the indicator does not move, water it before the test. The pH measurement value of this instrument is between 8 and 3.5. If the environment of the tested soil is alkaline greater than 8 or acidic less than 3.5, because the working range of the instrument has been produced, the detecting instrument may not work normally! PACKAGE CONTAINS: pH / Moisture / Soil Light Tester * 1.