3 in 1 Functions: You can use the soil tester measure soil moisture, PH Value and sunlight intensity. It's helpful for you to plant flowers, plants and make them grow healthy and strong. Easy to Use: No batteries or power required. Switch smoothly between the moisture, pH and light sensors easily with a single button. To start measuring, just stick the long probes into the soil until you reach root level. Indoor and Outdoor Use: It ensures and maintains the health and quality of your greenery. By using it, you can know when to water, control PH level and whether the plant getting adequate sunlight for your flowers, plants both indoor and outdoor. Time-Saving&Cost Effective: Our premium soil tester saves you both precious time and money, by helping you maintain your soil and, consequently, your garden or lawn in tip-top condition! Sensitive Accurate Monitor: Good sensibility and durability, this hygrometer with probe clearly displays soil moisture value, great reading accuracy, promotes healthy plants.Note: before testing the pH value, please add proper amount of water into the soil.Do not use it to test pure water or other liquids,which might damage to the soil tester. How To Use Step 1: Push the switch to moisture/pH/light position. Step 2: Stick the probes into the soil 4-6 inches (2/3 of the probes). Step 3: Adjust the position of the probes until the pointer on the dial swing slightly. Step 4: After 10 minutes, note moisture/pH/light level in the dial. Step 5: Remove probes from soil and wipe clean after each use.