Function 4 in 1: This pH meter can test soil moisture (5 levels), temperature (-8.9C to 50C), pH acidity (3.5 to 9 ,0) and sun intensity (9 levels), which helps to better monitor the plant growth environment, providing scientific value for planting advice. Large LCD display: l clear reading scale allows you to easily and accurately get the value. The backlit LCD display makes it easy to read day or night. Easy to use: plug in 1 x 9V battery (not included), insert the soil test kit into the soil about 10cm. And by pressing the "ON" button, you can easily and quickly read the value through the LCD within 5 seconds. Please put the probe cover on when not in use. This soil assessment tool will automatically shut off after 5 minutes? Non-operational. Portable and compact: The compact and ultra-portable design is easy to carry and suitable for indoor and outdoor use. Perfect for gardens, yards, potted plants, farms, and more. Usage: The soil tester is suitable for planting flowers, herbs, and indoor landscaping and outdoors. It is also an ideal tool for agricultural production.