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.
Multi-Function Car Tire Stone Removal Tool with Hook for Picking Out Rocks
$4.06
Label Stripping Machine – Semi-Automatic Unit for Beer, Baijiu, and Glass Bottle Label Removal; Custom Manufacturing Available
$19,980.00
High-Strength Manganese Steel Lifting Chain 6*18mm G80 Wear-Resistant Towing Chain
$84.34
Touchmark Acrylic Markers for Elementary Art, Washable Watercolor Pens for Kids' Drawing and Painting
$10.80
Official Flagship Store Steel Tongue Drum, C Key, 6-inch, 11 Notes, Carbon Steel Performance Grade Instrument for Kids and Students
$41.10
Outdoor Waterproof Backpack Camouflage Dry Bag with Wet/Dry Separation for Swimming, Rafting, and Trekking
$8.42
![[Save $50 on Order] Bundle: 5 Notebooks + 2 Pens + 20 Refills + 2 Grip Correctors](https://www.gosteppe.com/cache/small/product/270170/legacy-main-59be8c850af1ec303ad4901b.webp)
[Save $50 on Order] Bundle: 5 Notebooks + 2 Pens + 20 Refills + 2 Grip Correctors
$39.90
Sketching Tool Set for Art Students - Includes Blending Stumps, Tortillons, Paper Stumps, Sponge Balls, Cotton Swabs, Highlight Pens, Gray Tone Tools, Insert Knives, Smudging Knives, Scrapers, and Blending Cotton
$7.65
Suede Rope Korean Velvet Rope DIY Aromatherapy Candle Plaster Tag Hanging Cord Packaging Gift Box Ribbon Decorative Leather Rope
$0.85
![[Damai Holds Microneedle Hair Transplant Patent] Hair Collagen | Improves Hair Loss, Nourishes Dermis and Follicles](https://www.gosteppe.com/cache/small/product/270167/legacy-main-9c6481bdd960acdf68495a0e.webp)
[Damai Holds Microneedle Hair Transplant Patent] Hair Collagen | Improves Hair Loss, Nourishes Dermis and Follicles
$1,980.00
Selected Factory Low-Temperature 3D Printing Pen for Kids, Children's 3D Printing Pen Set, 3D Drawing Pen
$100.02
Milk Pasteurization Line - Small-Scale Yogurt Production Machine for Liquid Yogurt and Pasteurized Milk
$8,148.00
Commercial Small Heating Warmer Cabinet, Glass Constant-Temperature Countertop Display Case for Egg Tarts, Burgers, and Fried Chicken
$884.00
Custom Seal Stamp Engraving Personal Name Phone Number Private Chop
$5.89
Commercial Food Warmer Cabinet for Milk, Soy Milk, Burgers, Egg Tarts, Fried Chicken, Pies, Youtiao, and Bread Display
$1,355.00
PJ0040 Rose Embossed Cross Silicone Mold - For Candles, Aromatherapy, Soap, Plaster, and DIY Crafts
$11.20
Yuwell Oxygen Concentrator Control Board Motherboard 8F-3AW/8F-5AW/9F-5BW
$120.00
Leyingfang Floating Pen for Kids and Students - Water-Based Non-Toxic Erasable Whiteboard Pen for Drawing in Water, Large Capacity Suspension Pen
$18.00
Car Wheel Lug Nut Covers - Colorful Silicone Dust-Proof and Rust-Proof Caps for Tire Bolt Protection and Exterior Styling
$8.80
Automatic Stainless Steel Vegetable Slicer for Ginger, Potatoes, Carrots, Onions, and Cabbage - Commercial Dicing Machine
$3,951.36
![[Damai Holds Micro-Needle Hair Transplant Patent] Top Thinning Hair Transplant | Micro-Needle Density Enhancement (500 Units)](https://www.gosteppe.com/cache/small/product/270156/legacy-main-525bdaff56f89ee94752ef9c.webp)
[Damai Holds Micro-Needle Hair Transplant Patent] Top Thinning Hair Transplant | Micro-Needle Density Enhancement (500 Units)
$7,000.00
Little Leather Paper Strip Music Box (30-Note) Sheet Music - Contact Before Ordering; Specify Song Email for Digital Score Delivery
$1.00
Kitchen Sink Strainer Basket Push-Type Food Residue Separator Filter Hanging Storage Rack
$3.80
Heavy-Duty Heat-Treated CV Joint Puller Tool - Axle Ball Cage Removal and Installation Device for Automotive Repair
$66.00
Mobile Integrated Waste Transfer Station - 17 Cubic Meters Movable Compression Container
$159,443.00
Antique Glaze White Ceramic Brush Washer Large Brush Washer Water Pot Ink Stone Washing Calligraphy Painting Brush Washing Basin Four Treasures of the Study
$16.80
Authentic Chinese Philosophy Classics: Di Tian Sui, Qiong Tong Bao Jian, San Ming Tong Hui - Annotated & Illustrated Edition
$29.90
Household Disposable Kitchen Sink Garbage Filter Mesh Drain Pool Dishwashing Basin Strainer Vegetable Bowl Leftover Sink
$3.51
Continental Run-Flat Tires: 225/235/245/255/265 45/50/55 R17/R18/R19/R20/R21/R22
$357.00
Foldable Steel Tire Stone Removal Hook - Multi-Tool for Tire Repair, Stone Picking, and Emergency Window Breaking with Storage Bag
$11.70
![[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)
