Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | M03 / M04 |
| Detection Type | Non-Contact Capacitive |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switch (High/Low) |
| PCB Color | Green |
| Sensing Medium | Water and Non-Corrosive Liquids |
| Response Time | < 1 Second |
| Mounting Style | External Tank Wall Attachment |
| Interface Compatibility | Arduino, ESP32, STM32, PLC |
| Package Contents | 1x Sensor Module, 1x Pin Header |
Anonymous
Mar 21, 2026
Rating: 5/5
Saved my basement from flooding
I set this up as an early warning system for my sump pump. The non-contact feature means no corrosion issues over time. It alerted me immediately when the water rose too high.
Anonymous
Mar 16, 2026
Rating: 5/5
Great value for money
Compared to other liquid level sensors, this capacitive type is much cheaper and easier to install since you don't need to drill holes in your tank. Highly recommended for hobbyists.
Anonymous
Mar 10, 2026
Rating: 5/5
Perfect for my aquarium project
This non-contact sensor works flawlessly. I attached it to the outside of my glass tank, and it detects the water level accurately without any wires touching the water. Very safe and reliable.
Anonymous
Mar 09, 2026
Rating: 4/5
Good sensitivity, needs calibration
The module is well-made and the green PCB looks professional. It took a little trial and error to find the right spot on the plastic container, but once calibrated, it triggers consistently.
Anonymous
Mar 09, 2026
Rating: 4/5
Works well on glass and thin plastic
I tested this on both glass and thick plastic containers. It works perfectly on glass and thin plastic walls. On very thick industrial plastic, the sensitivity dropped slightly, but still usable.
Anonymous
Mar 02, 2026
Rating: 5/5
Easy to integrate with Arduino
Plug and play with my Arduino Uno. The digital output makes coding very simple. I used it to trigger a pump when the reservoir gets low, and it has been running for weeks without issues.
Q: What is the maximum thickness of the container wall it can sense through?
A: Generally, it works best with wall thicknesses up to 10mm. Performance may vary depending on the material density of the container.
Q: Can I use this with a 12V system?
A: No, the operating voltage is strictly 3.3V to 5V DC. Connecting it to 12V directly will damage the module. Please use a voltage regulator if your system is 12V.
Q: Is this module waterproof itself?
A: The sensing area is conformal coated for moisture resistance, but the electronic components and pin headers are not fully submersible. Only the sensing side should face the liquid container.
Q: Can this sensor detect oil or only water?
A: This capacitive sensor can detect most non-corrosive liquids, including water, oil, and milk, provided the container wall is not too thick.
Q: Does it come with connecting wires?
A: The package includes the PCB module and a pin header strip. You will need to solder your own wires or use jumper cables to connect it to your microcontroller.
Natural Green Peridot Crushed Stone, Small Raw Particles for Demagnetizing Energy, Aquarium Landscaping DIY Accessories
$8.50
3M 5-Inch Flocked Abrasive Disc with Hook-and-Loop Backing – Polishing Pad for Angle Grinders, Rust Removal & Cleaning
$3.20
Children DIY Art Rubbing Stick Round Painting Sponge Brush Graffiti Stamp Tool Kindergarten Rubbing Materials
$2.61
Over-Toilet Storage Rack for Bathroom - Organizer for Tissue, Toiletries, and Body Wash
$23.46
Magbase Cable Organizer with Dual Strong Magnets for Car, Office, and Home - Holds Power Cables, Ethernet, and Charging Cables
$24.90
Multi-Purpose Industrial Wiping Cloth 30*35 - Lint-Free Oil-Absorbent Paper for Aviation, Metro, and Rail Systems
$98.00
Commercial Electric Dicing Machine - Multi-Function Slicer for Carrots and Potatoes
$852.00
![[Single Pack] Handwoven Bird Nest Drop Net Cotton Rope Crochet Fruit Mesh Bag Storage Organizer](https://www.gosteppe.com/cache/small/product/269122/legacy-main-636b79526345e5fcd94b7ff1.webp)
[Single Pack] Handwoven Bird Nest Drop Net Cotton Rope Crochet Fruit Mesh Bag Storage Organizer
$10.36
Car Tire Lug Nuts - External Hex Cone Seat Wheel Bolts for Custom Rims
$80.00
Infant Sheepskin Rattle Baby Toy for Courage Building, Solid Wood Unpainted Chewable Glue-Free Version for Audio-Visual Grasping Early Education
$18.25
New Transparent Heat-Preserving Display Case for Roast Duck - Commercial Crispy Pork Belly Warmer with Eco-Friendly Design
$636.00
Electric Watercolor Spray Pen Children Hand-painted Color Pa
$46.55
Meiyike Water-Soluble Fertilizer with Major Elements – Hua Duo Duo No.1, No.2, No.10 Formulas, High Nitrogen, Phosphorus, Potassium Specialized Compound Fertilizer
$49.34
Waterproof Swim Bag, Wet Clothes Storage Tote with Handle, Large-Capacity Outdoor Hot Spring Pouch Dedicated for Mobile Phones
$59.96
Magic Expandable Bag, Foldable Shopping Tote, Portable Large-Capacity Storage for Grocery, Travel, and Mall Trips
$6.80
Dancolin Blending Stump Set for Oil Pastels, Art Student Tools for Heavy-Color Oil Painting, Dual-Tip Pointed and Round DIY Soft Wax Drawing, Smudging, Mixing, Highlighting, Erasable Knife for Painting and Color Blending
$16.80
Shanlian Hubei Brush Small Perfect Brush Washer - Ceramic Ink Dish, Calligraphy Cleaning Tool, Moisturizing Water Pot, Art Supply Decor
$14.20
Yanyu Mineral Water Fish Tank Stand - Triangular Bracket for Inverted Bottle Self-Made Water Circulation System
$17.05
Jingdezhen Pink Peony Flourishing Tea Canister Ceramic Lidded Loose Tea Storage Jar CYG-4578 One Jin Capacity Pu'er
$450.60
Round Sponge Brush Stamp with Mushroom Head – Printing Tool for Kindergarten Art and Kids' Crafts
$0.27
Metal Wick Centering Tool with Wooden Base for DIY Scented Candle Making
$1.28
Custom Temporary Bank Account Opening Sign, Company Signboard, Stainless Steel Door Plate, PVC Simple Plaque, Acrylic Advertising Board
$15.20
Natural Raw Crystal Diffuser Stones 500g - Same Style as Certain Summer Brand, Flameless Indoor Decor (White, Green, Purple, Yellow, Black, Blue)
$10.20
Iron Chain, Flower Pot Hanging Chain with Iron Rings, Black Suspension Chain for Bird Cages and Garden Planters
$0.10
Sheepskin Rattle with Brass Bells - Handmade Wooden Peach Wood Baby Toy for Chewing, Perfect for Children's Day
$10.80
Commercial Square Insulated Warmer Cabinet with Constant Temperature Heating, Countertop Display Case for Roast Duck, Chicken, Fried Chicken, Smoked Goose, and BBQ Meat
$338.00
PISEN Desktop Cable Organizer - Magnetic Data Cord Manager, Soft Silicone Fixed Wire Winder with Adhesive Clips, Mini Portable Hub
$10.10
Handcrafted Peach Wood and Sheepskin Rattle with Brass Jingle Stick – Traditional Chewable Wooden Baby Toy
$74.00
DC Drive DCS550-S02-0050-05-00-00
$10,838.20
Waterproof Storage Bag for Clothes and Bathroom Use, Large-Capacity Drawstring Organizer for Men and Women, Outdoor Travel and Toiletry Pack
$39.90
![[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)
