Soil tester can measure soil ph, light and plant moist level. it helps to take better care of your plants.features:the 4-in-1 soil meter can be used to test soil moisture, ph value and sunshine intensity etc to help plants grow healthier and stronger.switch to moist mode, ph mode or light mode. insert the probe into the soil about 2-4 inches, respond quickly.with this soil tester, you can know when to water your plants, adjust ph, or change lighting. ideal soil testing kit for home plants, gardens, lawns and farms.the double sensor design can measure soil moisture and ph value efficiently and accurately.