[4 in 1 function] This is a 4 in 1 multifunctional soil tester. Our soil tester quickly measures soil moisture, pH, temperature and sunlight to help you take better care of plants and flowers. By measuring soil moisture, pH and temperature, as well as plant sunlight level, you can know when to water the soil. [Clear Display] The large screen helps you read easily in any environment, day or night. Using the aaa1.5v*4 battery (not included), an alarm is triggered when the battery is low. [Quick and Accurate Measurement] The latest probe detection technology enables quick and accurate measurement soil pH, moisture and temperature. With light intensity analyzed by a light sensor on the instrument, it lets you know when to water, control temperature pH and acidity, and determine if plants have enough light to grow them scientifically. [Easy to Use] Simply insert the probe into the ground approximately 4 inches (10cm) and wait 10 seconds to read the visual data for an accurate and immediate reading. Simply remove the probe from the ground and clean it after use. (This soil tester should not be used directly to test liquids. If the ground is too dry, do not insert it into dry hard ground, otherwise the testing machine will be damaged.) [wide range, satisfactory service] can be used indoors and outside. Plant measuring instruments can be used in your gardens, farms, pots, fleshy plants, etc. We are committed to providing satisfactory service to our customers. If you are dissatisfied with the product, please contact us.