[Easy to use] There is an interface that uses ten ratios and three colors to read soil moisture. Just insert it into the ground and you can get the reading immediately! Remember to wipe the soil probe after each use. [When to water the plants] Have you always felt in the soil when to water? hygrometer keep your hands clean. Know the right time to water your garden and plants at any time. [How to Use] Just insert the probe tip into soil to the plant root level for several minutes, you can get the test result from the indicator pointer immediately. No Battery Please wipe the soil moisture probe with a cloth after each use [Upgrade waterproof material design] The soil moisture sensor not rust or oxidize. The waterproof design of 7.25 inches (about 18.3 cm) soil probes can also be used in most potted plants. No battery required. More sensitive and accurate. [Useful Tips] 1. Mineral salts, hard water and soil compaction also affect the electrical conductivity of house plant accessories. 2. Do not use a hygrometer to test very hard soil. 3. Never use indoor plant watering equipment to test other liquids. Designed specifically for soil testing. 4. After use, wipe the moisture sensor. Whether indoor or outdoor, the plant thermometer can be easily carried., Weight: 0.18518830008 Pounds, Manufacturer: Kueohse