Soil Moisture Sensor – Smart Plant Hygrometer Meter
Soil Moisture Sensor – Smart Plant Hygrometer Meter
Never Over- or Under-Water Your Plants Again
Take the guesswork out of plant care with this Smart Soil Moisture Sensor. Simply insert the probe into your soil and get an instant, color-coded moisture reading — no complicated setup, no app required. Perfect for indoor houseplants, flower pots, garden beds, and outdoor planting. Made in Mainland China.
How It Works – 3-Color LED Indicator
- 🔴 Red Light (0%–15%): Soil is too dry — time to water your plants.
- 🟢 Green Light (16%–60%): Moisture level is ideal — your plants are happy!
- 🔵 Blue Light (61%–100%): Soil is too wet — hold off on watering.
Key Features
- One-Button Real-Time Monitoring: Press the button once to get an instant moisture reading — quick, simple, and accurate.
- Leave It In the Soil: No need to remove between readings — keep it inserted for continuous, long-term monitoring.
- Splash-Proof Design: The probe (black part) can be inserted directly into wet or damp soil; the white host unit should be kept dry.
- Wide Compatibility: Works across a variety of soil types and hardness levels — great for potted plants, garden beds, lawns, and more.
- No Wiring Required: Powered by a single 3V button battery (not included) — completely wireless and portable.
- Compact & Lightweight: Slim profile (131 × 25.1 × 10.9 mm) fits easily in any pot or garden patch without disturbing roots.
Specifications
| Material | ABS Plastic |
| Color | White |
| Working Voltage | 3V |
| Working Current | 10µA |
| Rated Power | 0.03W |
| Measurement Range | 0%–100% (±5% accuracy) |
| Battery | 1 × 3V Button Battery (not included) |
| Item Size | 131 × 25.1 × 10.9 mm / 5.2 × 1.0 × 0.4 in |
| Weight | 30g / 1.1 oz |
| Model | WN1803 |
What's in the Box
- 1 × Soil Moisture Meter (battery not included)
Great For
Houseplant enthusiasts, home gardeners, balcony growers, greenhouse operators, and anyone who wants to keep their plants thriving with the right amount of water — every time.
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Frequently Asked Questions
Q: Does the soil moisture sensor need a battery, and what type?
A: Yes, the smart soil moisture meter requires one 3V button battery to operate. The battery is not included in the package, so please purchase one separately before use.
Q: Can I leave the soil moisture meter inserted in the soil all the time?
A: Yes! One of the standout features of this moisture sensor is that you can leave the probe inserted in your pot or garden bed for continuous, long-term monitoring. Simply press the button whenever you want to check the current moisture level.
Q: Is the soil moisture tester waterproof?
A: The probe (black part) is splash-proof and safe to insert into damp or wet soil. However, the white host unit (the body containing the electronics and LED indicator) should not be submerged or soaked in water.
Q: What types of plants and soils is this hygrometer suitable for?
A: This soil moisture sensor is compatible with a wide range of soil types and hardness levels. It works well for indoor houseplants, flower pots, outdoor garden beds, herbs, succulents, and more — making it a versatile tool for virtually any plant-care routine.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.