ITEM NAME:3-in-1 Soil Moisture Meter, Light and PH acidity Tester Plant Tester Indoor Q8A3 3-in-1 Soil Moisture Meter, Light and PH acidity Tester Plant Tester Indoor Q8A3 FUNCTIONs -- 1,Measures moisture content of soil to lets you know when to water 2, Helps you determine if plant is getting adequate light 3, Helps you control PH level in soil, acidic or alkaline is suitable for your plants, HOW TO USE -- No batteries needed, Indoor or outdoor use. Simply insert the probes into the soil about 4 inches, and you'll get your reading Perfect tool for indoor/outdoor plants, help your plants grow healthy and strong.Please tester into the soil before the soil is moistened with water, 10 cm above the probe to be inserted, the most accurate measured IMPORTANT TIPs --1, Do not touch the stone or hard rock soil, if the soil is too hard and dry, easy to damage the probes. 2. Design for testing soil ONLY. 3. After using, need to clean and wipe the probes.4.measurement of moisture and pH must be viewed while the unit is in the soil,And, the tester must be kept in the soil for 10 minutes or more. 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) Distance between probes: 1.2cm Instructions: Step 1: Switch moisture/pH/light position Step 2: Stick the probe into the soil about 2-4 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 and Advice: Use fine sandpaper lightly sand the probes so that keep clean and dry and then use Don't touch the stone or hard objects since it will be easy to damage the probe Can't test the water for a long time,in case it may damage probe. Don't use it to test rigid ground or floor Don't touch fire and stay away from children Remove probe from soil and.Design for testing soil ONLY. After using, need to clean and wipe the probes.4. HOW TO USE -- No batteries needed, Indoor or outdoor use. pH Range: 3.5-8 PH (3.5-6.5 ACID, 7 NOR, 7-8 ALKALI). Step 5: Remove probe from soil and wipe clean after each use.