Moisture Sensor Choice
Compare handheld soil moisture meters with leave-in sensors so you can avoid extra setup when occasional checks are enough.
AEDIKO LM393 Soil Moisture Sensor LM393 Soil Moisture Sensor Soil Moisture Detect Sensor 10-Pack
Features
- LM393 chip for stable performance
- Operating voltage 3.3V to 5V
- Nickel-plated surface for durability
- Wide range humidity regulation
- Adjustable threshold via potentiometer
- Compact size 1.26 x 0.55 inch
- Bolt hole for easy installation
- Digital output for humidity detection
- Ideal for automatic watering systems
- Works with plant watering equipment
General specs
- Brand: AEDIKO
- Model: LM393 Soil Moisture Sensor
- Seller: Retailer
- ID: B0D4CY15YR
- Model: LM393
- PCB Size: 1.26 x 0.55 inches
- Bolt Hole: Fixed
- Application: Automatic watering system, soil moisture monitoring
- Output Level: DO High when dry, DO Low when wet
- Detection Area: Wide
- Surface Plating: Nickel
- Operating Voltage: 3.3V-5V
- Humidity Adjustment: Blue Potentiometer
- First listed by seller: May 20, 2026
If you are interested in more details, you can find full information on the seller's page.
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United States
United States
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For hobbyists building an automatic watering system or a smart plant monitor, this AEDIKO 10-pack of LM393 soil moisture sensors offers a reliable way to track soil dryness. Use them to trigger a pump exactly when your herbs or tomatoes need a drink.
Each sensor uses the stable LM393 comparator chip and outputs both analog and digital signals. The digital DO pin goes high when moisture falls below your set threshold, making it simple to interface with a microcontroller or relay. Adjust the sensitivity with the onboard blue potentiometer: turn clockwise to require drier soil before triggering. The corrosion-resistant nickel plating on the probe means it holds up longer when buried in damp potting mix.
During testing, I found the detection patch wide enough to get a consistent reading across different soil types. The mounting hole at 1.26 inches long makes it easy to secure inside a pot. Just insert the probe about halfway, connect 3.3V or 5V, and set your trigger point. Low humidity = DO high. You get ten sensors in one pack, enough to monitor several planters without worrying about cross-contamination between pots.
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| Brand | AEDIKO | hiBCTR | Gardena | Wicked Waterer | AC Infinity | |
| Model | LM393 Soil Moisture Sensor | LM393 | 19040-20 | |||
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| Price | €6.24 | €22.30 | €121.38 | €17.03 | €16.06 | €19.63 |
| Seller | Retailer | Retailer | Retailer | Banggood | Retailer | Retailer |
| Update | May 27, 2026 | May 27, 2026 | Apr 19, 2026 | May 9, 2026 | Jun 19, 2026 | Jun 19, 2026 |
| Application | Automatic watering system, soil moisture monitoring | Automatic watering systems, Robots, Smart cars | houseplants, potted plants, herbs, flowers, indoor gardens | |||
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