1.3-in-1 Moisture Meter - How to know the pH of the soil? How do I know the humidity of the soil? How much light is suitable? This soil moisture meter is a must for you. The three-in-one function of the moisture meter can help you understand the soil condition in real-time. 2.Easy to use - Just insert the sensor probe into the soil about 2-4 inches, no need for batteries and extra preparation, and toggle the switch to test moisture, pH, and sunlight. Please wait a few minutes until the pointer stops swinging to obtain a stable reading. If the plant is very dry, the soil pointer will not display data, which means that the plant needs water. 3.Accurate & Sensitive sensor - application with double-needle Detection Technology strongly enhances the speed and accuracy of detecting and analyzing soil moisture and pH acidity, and ensure the soil’s demand for moisture and light is properly passed Scientific method of planting. 4.Suitable for home garden breeding, rice planting, vegetable planting, forest planting, succulent soil, potted plants, flower planting, greenhouse planting, garden planting, soil testing, etc., to meet all your needs for soil testing. Kindly tips: 1. Never use soil tester to test the water or other liquid, just designed for testing soil . 2. If the soil is too dry the needle will not move, need to water it before testing . 3. When measuring light, the soil meter light sensor needs to face the light so that the light measurement will be more accurate.  4. The soil pH of most plants is close to neutral, so the floating range of the test pH needle will be small.