1.4 in 1 moisture tester: you can measure soil pH (3.5-9.0.12 levels), sunlight intensity (9 levels), humidity (5 levels) and temperature (-9 ° C to 50 ° C). 16 ° F - 122 ° F) from the ground. 2.Easy to use: gently insert the probe up and down. The LCD screen displays the four indexes of the detected area. For a more accurate result, insert the probe deep into the soil until it reaches the bottom of the plant root. 3.Backlit LCD Display: With the large LCD display, you can easily view different measurements. Thanks to the green backlight, you can read the index in the dark. An auto shut-off feature helps extend battery life. 4.Quick response time: 5 minutes automatic shutdown to extend battery life. The screen displays a low battery level. Powered by a 9 V battery (not included). 5.Package content: 1pcs ground finder