Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switch Output (0 and 1) |
| Analog Output | Yes, 0-255 gradient value |
| PCB Size | 3.2cm x 1.4cm |
| Indicator LED | Power LED and Digital Switch Output LED |
| Comparator Chip | LM393 Wide Voltage Comparator |
| Sensitivity Adjustment | Adjustable via potentiometer |
| Application | Soil moisture detection, automatic watering systems |
| Connector Type | 3-pin PH2.0 interface |
| Material | FR-4 PCB with gold-plated probes |
Anonymous
Mar 29, 2026
Rating: 5/5
Excellent for learning electronics
Bought this for a university project on IoT agriculture. The documentation online is plentiful, and the module itself is robust. The LM393 comparator makes the logic very stable.
Anonymous
Mar 28, 2026
Rating: 5/5
Works great with Raspberry Pi
Connected this to a Raspberry Pi via an ADC converter. The readings are consistent and allow me to log soil humidity data over time. Very happy with the purchase.
Anonymous
Mar 17, 2026
Rating: 4/5
Good value but probes need care
Great little module for the price. It detects moisture changes instantly. Just remember to wipe the probes clean after long-term use in soil to prevent corrosion, or consider coating them if using permanently outdoors.
Anonymous
Mar 14, 2026
Rating: 4/5
Reliable for prototyping
We use these in our makerspace for various student projects. They are durable enough for repeated insertion into soil boxes. Only giving 4 stars because the included wires are a bit short for some setups.
Anonymous
Mar 13, 2026
Rating: 5/5
Saved my indoor plants
I built a simple automatic watering system using this sensor and a peristaltic pump. It has kept my houseplants alive while I was on vacation. The sensitivity adjustment is very responsive.
Anonymous
Mar 02, 2026
Rating: 5/5
Perfect for my Arduino project
This sensor works flawlessly with my Arduino Uno. The analog output gives great granularity for measuring soil dampness, and the digital threshold is easy to set with the onboard potentiometer. Highly recommended for DIY smart garden kits.
Q: How do I calibrate the sensitivity of the sensor?
A: There is a blue potentiometer on the back of the PCB. Insert the sensor into dry soil and turn the screw until the digital LED just turns off. Then, insert it into wet soil; the LED should turn on. This sets your threshold.
Q: Is this sensor waterproof for outdoor permanent installation?
A: The electronic components on the PCB are not waterproof. While the metal probes are resistant to rust, we recommend coating the PCB with conformal coating or placing it in a waterproof enclosure if used outdoors permanently.
Q: Does this module provide an analog reading or just a yes/no signal?
A: It provides both! The DO (Digital Output) pin gives a high/low signal based on your threshold setting, while the AO (Analog Output) pin provides a variable voltage representing the exact moisture level, which can be read by an ADC.
Q: Can this sensor be used directly with a 12V power supply?
A: While the product title mentions 12V compatibility in certain kit configurations, the sensor module itself operates best at 3.3V to 5V. If you are using a 12V system, please ensure you use a voltage regulator or a compatible driver circuit to protect the sensor.
Q: What is the lifespan of the metal probes in acidic soil?
A: In highly acidic or saline soils, the exposed metal probes may corrode over several months of continuous exposure. For long-term projects, we suggest checking them periodically or applying a protective conductive coating.
Zhonglian Hamburger Food Warmer Display Cabinet 1.2m 1.5m 3-in-1 Warmer Double-Layer Display Cabinet Crisp Keeper
$3,376.00
A3 Watercolor Paper 300g Thickened Cotton Pulp Fine Grain, A4 Medium Grain for Beginners, 4K Wood Pulp Cotton Blank Hand-Painting Paper, Square Art Coloring Paper, Postcard & Bookmark Paper
$18.90
Sketch Gray Tone Pencils for Art Students, Detail Highlight Blending Stumps, Makeup Sponge Pens, Quick Sketch Eraser Pen Sets
$6.46
Disposable Vacuum Cleaner Filter Mesh - Non-Woven Dust Bag with Elastic Band for Home Use
$4.50
Systematic 3D Painting Learning Package (Includes 100 Lessons)
$798.00
6/8/12Pcs Silicone Red Wine Glass Identification Marker Char
$27.44
Stainless Steel Sink Drain Basket – Expandable Kitchen Dish and Vegetable Rack
$12.35
Tungsten Carbide Internal Thread Tool Holder – Anti-Vibration CNC Turning Insert for Small Bore Threading (CNR)
$73.02
Henkel Loctite SICOMET 8400 77 99 40 50 Instant Adhesive for Metal and Rubber with BS Accelerator
$69.00
Colored Pencil Set, Basswood Hexagonal Raw Wood Pencils for Painting and Art Coloring
$21.68
Small Ceramic Herb Jar – Imperial Yellow Hexagonal Double-Layer Container for Angong Niuhuang Wan Pills
$8.80
Spanish Brush Master ESCODA PERLA Pearl White Toray Nylon Round Watercolor Brush, Short Handle 1430
$44.20
Qiwei COD Rapid Detector QW-COD-T/B - Chemical Oxygen Demand Tester with Potassium Dichromate Digestion for Wastewater
$3,330.16
Natural Wheat Straw Baby Rattle - Children's Musical Instrument Toy, Maraca, Shaker Bell for Newborns - Orff Music Instrument
$10.80
CANDLE.LAB | 100% Cotton Unwaxed Candle Wick Roll - Thin Stem Chandelier Candle Making Supplies #31
$25.00
Pneumatic Rotary Vibrator - Feiyu GT25 Pneumatic Vibrator - Quality Guaranteed
$997.00
Quick-Frozen Vegetable Deodorizing Sterilization Washer IRW Zhongfang Ready-to-Cook Vegetable Production Washing Line Semi-Finished Vegetable Processing Oxygen Equipment
$27,000.00
KETELES 105R7120 Carbon Fiber Road Bike - Lightweight Racing Bicycle with Gear Shifter
$11,339.00
Natural White Crystal Sugar Cube DIY Crystal Jewelry Accessories Materials Irregular White Crystal Blocks
$2.50
Foldable Silicone Brush Washing Bucket - Portable Water Container for Calligraphy and Painting Students
$8.42
Cute Cartoon Bird Ceramic Brush Washer - Decorative Pen Cleaning Cup and Photo Prop
$12.60
Kitchen Storage Rack with Drainage Tray – Organizer for Dishcloths, Faucets, Sink Areas, and Dishwashing Supplies
$4.15
Sheng Y Graffiti Paint Brush Set, Children's Stationery Kit with Art Watercolor Pens, Factory Direct Gift Supplies
$49.10
Ningbo Manufacturer Display and Storage Rack, Wall-Mounted Tire Storage for Home Garage, Customizable Wall Tire Rack
$237.60
Universal Low-Temperature 3D Printing Pen Filament PCL, Eco-Friendly Material Wire 1.75mm Compatible with Deli Pens, 40 Color Options
$3.80
Automatic Feeder - Stainless Steel Food Machinery Accessory Equipment
$20,150.00
Henkel Loctite Super Glue Series: 401, 406, 460, 480, 495, 4011, 4161, 496, 382, 410
$28.00
Over-Toilet Storage Rack with Tissue Organizer for Bathroom, Vanity, and Shower Gel - Multi-Use Bathroom Shelf
$27.66
15-inch Carbon Fiber FPV Drone Frame - High-Strength Quadcopter Aerial Photography Chassis Direct Sale
$396.44
Petal-Shaped Ceramic Tea Scoop and Holder for Gongfu Tea Ceremony
$97.00
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
