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Promotes Healthy Plants 1. 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. 2. Control pH level in soil, acidic or alkaline is suitable for your plants, and you will never plant your lovely flowers into high-acid or extreme alkalinity soil. 3. Determine if your plants are getting adequate light. Steps of Use 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 several minutes, Note moisture/pH/light level in the dial Step 5: Remove probe from soil and wipe clean after each use 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) Note ● 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. ● Don't test the water for a long time, in case it may damage probe. ● Don't touch fire and stay away from children. ● Remove probe from soil and wipe clean after each use.