Skip to main content
Home / Computer Hardware, Monitors & Peripherals / 12V Soil Moisture Sensor Relay Control Module Auto-Watering Switch Activated by Low Humidity

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage 12V DC
Output Signal Digital Switch Output
Probe Material Nickel-Plated Steel
Relay Load Capacity 10A 250VAC / 10A 30VDC
Adjustment Method Potentiometer Sensitivity Control
Power Indicator Red LED
Status Indicator Green LED
Probe Cable Length 30cm
PCB Dimensions 32mm x 14mm
Operating Temperature -10°C to 50°C

5 reviews

A

Anonymous

Mar 18, 2026

Rating: 4/5

Good module, tricky calibration

Took some time to set the threshold right using the potentiometer but works well now. Good value for money.

A

Anonymous

Mar 02, 2026

Rating: 3/5

Probe corrosion concern

Functionality is good but the probe shows some rust after heavy use in wet soil. Might need replacement later.

A

Anonymous

Feb 19, 2026

Rating: 5/5

Easy to integrate

Connected easily to my controller. The screw terminals are secure and the board is compact.

A

Anonymous

Feb 06, 2026

Rating: 5/5

Reliable automation

Been running for 3 months without issues. Great for DIY irrigation projects. Voltage remains stable.

A

Anonymous

Jan 31, 2026

Rating: 5/5

Perfect for my greenhouse

Works exactly as described. The relay clicks clearly when moisture is low and triggers my pump automatically.

5 FAQ

Q: What is the return policy if it fails?

A: We offer a 30-day return policy for defective units. Please contact customer service for assistance.

Q: How do I adjust the moisture sensitivity?

A: Use a small screwdriver to turn the blue potentiometer on the board while monitoring the LED indicator.

Q: Can it handle a 12V water pump directly?

A: Yes, provided the pump current draw does not exceed the relay rating of 10A.

Q: Does this work with 5V Arduino logic?

A: The sensor module operates at 12V. You may need a level shifter or relay driver to interface with 5V logic boards.

Q: Is the electronic board waterproof?

A: No, only the probe is water-resistant. The PCB module should be kept in a dry enclosure.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Front Wiper Arm Assembly for Citroën C-Elysée, Xsara Picasso, Peugeot 307/301

Front Wiper Arm Assembly for Citroën C-Elysée, Xsara Picasso, Peugeot 307/301

$35.00

Underbite Corrector Case - Portable Magnetic Lanyard Storage Box for Frankel Appliance and TB Palatal Expander

Underbite Corrector Case - Portable Magnetic Lanyard Storage Box for Frankel Appliance and TB Palatal Expander

$22.70

Car Tire Stone Removal Tool, Multi-Function Hook for Picking and Extracting Stones from Treads

Car Tire Stone Removal Tool, Multi-Function Hook for Picking and Extracting Stones from Treads

$6.43

Outdoor Lamp Stand for Camping, Lantern Holder Pole for Street Vending and Night Fishing

Outdoor Lamp Stand for Camping, Lantern Holder Pole for Street Vending and Night Fishing

$13.89

Waste Removal and Paper Stacking Machine, Automatic Paper Collection and Counting Receiver for Carton Printing Equipment, Carton Factory Machinery

Waste Removal and Paper Stacking Machine, Automatic Paper Collection and Counting Receiver for Carton Printing Equipment, Carton Factory Machinery

$6,400.00

Sheepskin Baby Rattle - Chewable Traditional Handmade Shaker Bell, Intangible Cultural Heritage Essential for Newborn Care

Sheepskin Baby Rattle - Chewable Traditional Handmade Shaker Bell, Intangible Cultural Heritage Essential for Newborn Care

$57.00

Zhizhi Study Room 'Small Pot Sky' Brush Washer - Traditional Handmade Glass with Lost-Wax Method, Silk Luster, Double-Compartment Water Vessel

Zhizhi Study Room 'Small Pot Sky' Brush Washer - Traditional Handmade Glass with Lost-Wax Method, Silk Luster, Double-Compartment Water Vessel

$457.00

Zao Boshi Insulated Food Cart - Programmable Banquet Warmer for Buns, Breakfast Items, and Hotel Dry/Wet Dishes

Zao Boshi Insulated Food Cart - Programmable Banquet Warmer for Buns, Breakfast Items, and Hotel Dry/Wet Dishes

$11,566.00

Lichuan JK [Blood Oath] - Original Authentic Japanese Dark Style Embroidered Sailor Suit - Spring/Autumn Set

Lichuan JK [Blood Oath] - Original Authentic Japanese Dark Style Embroidered Sailor Suit - Spring/Autumn Set

$59.00

Sink Storage Rack Stainless Steel No-Drill Kitchen Sponge Steel Wool Cloth Pot Lid Organizer Wall-Mounted Drain Rack

Sink Storage Rack Stainless Steel No-Drill Kitchen Sponge Steel Wool Cloth Pot Lid Organizer Wall-Mounted Drain Rack

$4.93

Sketch Blending Stump Set for Artists - Detail Highlight and Shadow Smudging Tools with Replacement Tips

Sketch Blending Stump Set for Artists - Detail Highlight and Shadow Smudging Tools with Replacement Tips

$14.80

Softening Agent for Board Arcs Melamine Softener Eco-Friendly Board Paint-Free Board Whole House Customization Arc Softener

Softening Agent for Board Arcs Melamine Softener Eco-Friendly Board Paint-Free Board Whole House Customization Arc Softener

$9.30

Car Tire Stone Removal Tool - Hook Picker for Cleaning Pebbles from Vehicle Treads

Car Tire Stone Removal Tool - Hook Picker for Cleaning Pebbles from Vehicle Treads

$3.90

Electrical Box with PLC System and VFD for Fans and Pumps

Electrical Box with PLC System and VFD for Fans and Pumps

$2,519.00

Zunjue Watercolor Sketchbook 300g Fabric-Covered Journal – Portable Acrylic Marker Book, 100% Cotton Flip-Style Concertina Drawing Paper

Zunjue Watercolor Sketchbook 300g Fabric-Covered Journal – Portable Acrylic Marker Book, 100% Cotton Flip-Style Concertina Drawing Paper

$13.70

French Imported Arches Watercolor Paper, Handmade Cotton Pulp 300g Full/Half/4K/8K/16K/32K Rough/Medium/Fine Grain, 185g Cotton Pulp for Postcards and Watercolor Books

French Imported Arches Watercolor Paper, Handmade Cotton Pulp 300g Full/Half/4K/8K/16K/32K Rough/Medium/Fine Grain, 185g Cotton Pulp for Postcards and Watercolor Books

$20.80

[Official Authentic] Zichao Bear Wanda Cinema Popcorn Acrylic Keychain Plush Doll Cute Toy

[Official Authentic] Zichao Bear Wanda Cinema Popcorn Acrylic Keychain Plush Doll Cute Toy

$25.40

Heidelberg Printing Press Automatic Blanket Wash Cloth - Non-Woven Cleaning Fabric, 500m Roll

Heidelberg Printing Press Automatic Blanket Wash Cloth - Non-Woven Cleaning Fabric, 500m Roll

$3,185.00

Bucket Pack Natural Wood Colored Pencils Water-Soluble for Kids Coloring and Doodling

Bucket Pack Natural Wood Colored Pencils Water-Soluble for Kids Coloring and Doodling

$6.65

Chunfei Grocery Store Yunm'an GR02 Gravel Bike - Thru-Axle Disc Brake, Lightweight Touring with Multiple Rack Mounts

Chunfei Grocery Store Yunm'an GR02 Gravel Bike - Thru-Axle Disc Brake, Lightweight Touring with Multiple Rack Mounts

$6,444.00

Variable Frequency Drive Power Board ZPOW-591 for ACS880

Variable Frequency Drive Power Board ZPOW-591 for ACS880

$2,200.00

Professional Sketching Eraser Kit - Blending Stumps, Sponges, and Paper Tortillons for Highlight & Shadow Correction

Professional Sketching Eraser Kit - Blending Stumps, Sponges, and Paper Tortillons for Highlight & Shadow Correction

$3.90

Weighted Water Bag with Handle, Thickened PV Mesh Gravity Ballast for Banner Stand Fixation (8KG)

Weighted Water Bag with Handle, Thickened PV Mesh Gravity Ballast for Banner Stand Fixation (8KG)

$35.10

Ultra-Fine Purification Lint-Free Cloth Cleaning Cloth Lens Wipe High Quality 0730 Water-Absorbing Dust Removal UV Nozzle 100 Sheets

Ultra-Fine Purification Lint-Free Cloth Cleaning Cloth Lens Wipe High Quality 0730 Water-Absorbing Dust Removal UV Nozzle 100 Sheets

$96.00

Wen Zhengming Small Regular Script Calligraphy Cards: Li Sao Jing, Thousand Character Classic, Qin Fu, Cao Tang Shi Zhi, Qing Jing Jing, Record of the Drunken Pavilion, Red Cliff Ode

Wen Zhengming Small Regular Script Calligraphy Cards: Li Sao Jing, Thousand Character Classic, Qin Fu, Cao Tang Shi Zhi, Qing Jing Jing, Record of the Drunken Pavilion, Red Cliff Ode

$59.00

Zhizhi Manshu Zhao Mengfu Small Regular Script Collection of Ancient Classics (Vol. 1) - Calligraphy Copybook, Brush Writing Cards, Foldable Practice Cards

Zhizhi Manshu Zhao Mengfu Small Regular Script Collection of Ancient Classics (Vol. 1) - Calligraphy Copybook, Brush Writing Cards, Foldable Practice Cards

$49.00

Language of Drums Motion Path Set - Essential Creativity and Rhythm Teaching Material for Drum Kits and Jazz Drums

Language of Drums Motion Path Set - Essential Creativity and Rhythm Teaching Material for Drum Kits and Jazz Drums

$59.14

onlycook Sink Drain Basket, Faucet-Mounted Food Residue Separator and Washing Strainer - 1 Pack

onlycook Sink Drain Basket, Faucet-Mounted Food Residue Separator and Washing Strainer - 1 Pack

$14.10

Heavy-Duty Wiper Arms and Blades for Trucks and Agricultural Vehicles - Universal Replacement Wiper Rubber Strips

Heavy-Duty Wiper Arms and Blades for Trucks and Agricultural Vehicles - Universal Replacement Wiper Rubber Strips

$5.50

Bus Adapter FEPL-02 for ABB Variable Frequency Drive

Bus Adapter FEPL-02 for ABB Variable Frequency Drive

$1,230.00