
Why You’ll Love It
Dial in perfect growing conditions anywhere—garden beds, containers, or greenhouse—without guessing. The ST-09 combines the most important soil and environment readings in a single, compact meter so you can water, feed, and position plants with confidence

What It Measures
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Sunlight: 0–200,000 Lux
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Soil Moisture: Scale 0–10 (Dry → Moist)
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Soil pH: 1.0–8.0 (7 = neutral)
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Soil Fertility: Low / Middle / High (indicator bar)
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Ambient Humidity: 5–99% RH
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Ambient Temperature: 32–140°F (0–60°C)
Backlight: Yes • Working current: ≤ 2 mA • Battery: 1× AAA (not included)
How to Use
Install 1× AAA battery.
Attach the probe firmly.
Insert vertically into soil (more than ½ of the probe length).
Select mode with the toggle switch and wait a few seconds for the reading.
Measure multiple spots and take the average for best accuracy.
Remove & wipe the probe clean after use.



