Main Features: This Device Is A Good Helper For Gardening. It Can Test Soil Ph Soil Moisture And Light Intensity. No Battery Is Needed Stick The Probe Into The Soil 15Cm Deep The Outcome Will Be Precise Do Not Stick The Probe Into Water To Avoid Destroying Electrode Press The Button To Moist Which Is The Water Key And The Corresponding Symbols Are Dry And Wet. The Value 1 - 3 ( Red Part ) Indicates That Watering Is Needed 4 - 7 ( Green Part ) Is Appropriate Please Adjust The Watering Time According To The Plant Species And 8 - 10 ( Blue Part ) Indicates That It Is Too Wet The Ph Value Corresponds To The 8 - 3.5 Value In The Table. Alkaline Is The Alkali And Acdic Is The Acid. Please Adjust The Ph Of The Soil According To The Plant Species Light Key Is Luminance. The Measurement Range Is 0 - 2000 Lumens. The Larger The Value Is The Stronger The Light Is. Please Adjust According To The Plant Species Abs MaterialDiv>SpecificationGeneral Special Function: Soil Test Material: Abs Dimensions And Weight Product Weight: 0.1000 Kg Package Weight: 0.1200 Kg Product Size (L X W X H): 5.00 X 3.80 X 29.00 Cm / 1.97 X 1.5 X 11.42 Inches Package Size (L X W X H): 30.00 X 6.00 X 4.00 Cm / 11.81 X 2.36 X 1.57 Inches You Will Receive You Will Receive: 1 X Soil Tester