Promotes Healthy Plants: 3-in-1 Soil Meter help you know your soil more clear and care your plants more rational. Let you know when to water. Dry and needs water or wet and could use a day to dry out. You will never over/under water your plants again Help you to control Ph level in soil, acidic or alkaline is suitable for your plants You will never plant your lovely flowers into high-acid or Extreme alkalinity soil Help you to determine if plant getting adequate light Easy To Use: Step 1: Switch moisture/pH/light position Step 2: Inset the probe of the meter to the plants' roots about 4-6 inches Step 3: Adjust the position of the probe until the pointer on the dial swing slightly Step 4: After 10 minutes, Note moisture/pH/light level in the dial Step 5: Remove probe from soil and wipe clean after each use Tips: 1. without touching the stone, don't too hard, easy to damage the probe 2. After using, need to clean and wipe the probe (can't test the water) 3. Don't inserted in the soil for a long time for using 4. Design for testing soil, don't use it to test pure water or too rigid ground Specifications pH Range: 3.5-8 Ph (3.5-6.5 ACID, 7 NOR, 7-8 ALKALI) Moisture Range: 1-10 (1-3 DRY, 4-7 NOR, 8-10 WET) Relative Light: 0-2000 lux (0-200 LOW, 200-500LOW+, 500-1000 NOR 1000-2000 HGH) Package Includes: 1 x 3-in-1 Soil Meter.