1.The probe is made of stainless metal, practical and has a long service life. 2.Simple operation, clear LCD screen, saving time and energy, high efficiency. 3.The unit has low battery indication and can be automatically off after idle use for 5 minutes. 4.4 in 1 soil survey instrument can test moisture, PH value, temperature and environment sunlight intensity of soil, which is more convenient. 5.This instrument is a great tool for measuring growing conditions of all kinds of indoor and outdoor plants as as garden . Test objects: sunlight, moisture, PH value, temperature Sunlight (9 levels): LOW-, LOW, LOW+, NOR-, NOR, NOR+, HGH-, HGH, HGH+ Moisture (5 levels): DRY+, DRY, NOR, WET, WET+ PH value (12 levels): 3.5-9.0 (display resolution 0.5) Temperature: -9C to +50C (16F to 122F) (display resolution 1C/1F) Power supply: 1 * 9V battery (not included) Automatic off: the unit will be automatically off after idle use for 5 minutes. Operating temperature: +5C to +40C Colour:yellow Material:Plastic + metal Size:30*20*0.6cm Package Contents: 1 x P4 In1 LCD PH Garden Soil Tester Meter Note: 1. The unit only can be used in soil, do not place the probe into water or other solutions. 2. 't leave the probe in the soil than necessary to avoid the possibility of damage to the probe. 3. 't bend the probe, 't use the probe to up the soil. 4. 't put the probe near metal objects and be to keep the probe from metal objects. 5. Wipe the probe clean and dry taking another test reading and after use. Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.