Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | M03 / M04 |
| Detection Type | Non-Contact Capacitive |
| Operating Voltage | 3.3V - 5.5V DC |
| Output Signal | Digital Switch (High/Low) |
| PCB Color | Green |
| Compatible Liquids | Water, Oil, Acidic Solutions |
| Container Compatibility | Glass, Plastic, Acrylic (Non-metal) |
| Response Time | < 1 Second |
| Interface | 3-Pin Header (VCC, GND, OUT) |
| Application | IoT Projects, Arduino, Raspberry Pi |
Anonymous
Mar 30, 2026
Rating: 5/5
Simple integration
Integrated easily into my ESP32 smart home setup. The digital output makes coding the logic trivial. Highly recommend for anyone building liquid level alerts.
Anonymous
Mar 27, 2026
Rating: 5/5
Essential for hydroponic systems
I bought four of these for my nutrient tank monitoring system. They handle the mild acidic solution without any corrosion issues since they don't touch the liquid directly.
Anonymous
Mar 14, 2026
Rating: 4/5
Reliable but sensitive to noise
Overall a great module. In a noisy electrical environment, I had to add a small capacitor to smooth out the signal, but otherwise, it performs exactly as described.
Anonymous
Mar 11, 2026
Rating: 5/5
Great for university projects
Used this for my final year embedded systems project. Documentation was clear enough to get it working quickly. The non-contact feature saved us a lot of design headaches.
Anonymous
Mar 04, 2026
Rating: 4/5
Good value but needs calibration
Works well with my Arduino Uno. You do need to spend a few minutes calibrating the sensitivity potentiometer based on your container thickness, but once set, it is very stable.
Anonymous
Mar 03, 2026
Rating: 5/5
Perfect for my aquarium project
This sensor works flawlessly through the glass of my aquarium. No need to drill holes or risk leaks. The sensitivity is adjustable and it triggers reliably every time.
Q: Is this module compatible with 3.3V microcontrollers like the ESP8266?
A: Absolutely. The module operates within a voltage range of 3.3V to 5.5V, making it fully compatible with both 3.3V and 5V logic microcontrollers.
Q: What happens if the container is made of stainless steel?
A: This sensor will not work with metal containers. The capacitive sensing principle requires a non-conductive barrier between the sensor and the liquid. Metal containers block the electric field.
Q: Does it work with oil or only water?
A: It works with various liquids including water, oil, and acidic solutions, provided the liquid has a dielectric constant different from air and the container is non-metallic.
Q: How do I adjust the sensitivity?
A: There is a small blue potentiometer on the back of the PCB. Use a small screwdriver to turn it clockwise to increase sensitivity or counter-clockwise to decrease it until the indicator LED behaves as desired.
Q: Can this sensor detect water levels through a thick plastic container?
A: Yes, it can detect through non-metallic containers like plastic or glass. However, if the wall thickness exceeds 10mm, you may need to adjust the sensitivity potentiometer carefully or test specific thickness limits.
Greenhouse Soil-Free Strawberry Growing Trough - PVC Elevated Hydroponic Channel with Drainage Outlet for Aerial Planting
$6.80
Marie's Sketch Blending Knife Set for Highlights, Shadows, and Quick Sketches - Professional Art Student Smudging Tools with Sponge Blenders, Paper Stumps, and Full Correction Kit for Drawing and Tracing
$9.25
Meiao Dental Imported Implant Package: Swiss ITI Straumann Implant Abutment and Prosthetic Teeth
$5,955.00
Bottled Water Faucet Stand, Large Water Jug Dispenser Rack, Pure Water Bucket Holder with Inverted Drinking Cover
$7.13
Dust Extraction Sanding Table - Industrial Pulse Cartridge Collector for Polishing, Stone, and Woodworking Dust
$600.00
Diamond Tire 255/45R20
$518.00
Amusement Park Suspension Bridge - 15m/20m/25m/30m Viral Swing Bridge with Iron and Steel Chains
$58.00
Paint Spray Catalytic Combustion Equipment - Industrial Exhaust Gas Treatment Device - Activated Carbon Adsorption/Desorption CO Catalytic Combustion
$324,999.00
Car Wheel Tire Bolt Rust-Proof Cap Universal Size 17 19 21 Decorative Dust-Proof Protective Cap Cover
$15.70
Commercial Electric Vegetable Slicer - Multi-Function Stainless Steel Machine for Potatoes and Canteens
$2,017.28
Irregular Ticket Stub Watercolor Paper Stamp Blank Drawing Paper 300g Cotton Pulp Fine Texture Thickened with Serrated Edges Specialized Paper for Art Students
$5.60
Stainless Steel Electric Buffet Warmer with Visible Lid - Square Flip-Top Chafing Dish for Hotels
$251.70
Baohong Cotton Pulp Watercolor Paper Pad 300g Cold/Hot Press, Glued on Four Sides, 16K/8K - Premium Full Cotton Art Paper for Oil Pastels and Professional Artists (Baoding, China)
$17.00
ORDER Industrial Large Roll Wiper Paper Dispenser, TORK Multi-Convenience Roll Stand
$170.00
Lifting Chain Slings Manufacturer, MHU Lifting Gear, G80 Manganese Steel Hoisting Chains, Single and Double Leg Sets
$835.00
Multi-Function Bathroom Storage Rack for Toilet, Washroom, and Sanitary Supplies, Over-Toilet Home Organizer
$20.30
Portable Travel Art Set for Kids - Watercolor Paint Box with Sketchbook and Mini Drawing Board
$9.05
Pneumatic Fitting PU Straight Connector Quick-Insert Plastic High-Pressure Air Hose Fitting PU-4681012
$4.90
Chain Sling Lifting Shackle Steel Chain Single Leg with Hooks on Both Ends for Towing, 2m Length, 5 Ton Capacity
$79.00
Large Brush Set Supply - Watercolor Pen Set for Children's Day Painting, Art, and Coloring
$25.55
Non-Bleeding Liquid Candle Dye - Macaron Colors for Soy Wax DIY Aromatherapy Candles
$21.00
Alloy Wheel Lug Nut Caps Compatible with Buick Excelle, Verano, Regal, LaCrosse, Encore, Cruze, Malibu, and GL8
$3.40
![[Damai Holds Micro-Needle Hair Transplant Patent] AI Robot Precision Hair Transplant | 1000 Units Hairline Planting](https://www.gosteppe.com/cache/small/product/269438/legacy-main-d695e1be3b1b8212f24ac863.webp)
[Damai Holds Micro-Needle Hair Transplant Patent] AI Robot Precision Hair Transplant | 1000 Units Hairline Planting
$24,990.00
Premium Ceramic Tea Canister Packaging Box, Empty Gift Box for Black Tea, Pu'er, White Tea, Biluochun, Gift Set Empty Box
$104.95
Thickened 304 Stainless Steel Planter Box for Home Balcony Vegetable Gardening - Rectangular Large Flower Pot for Rooftop Planting
$204.00
Zhongheng Car Tire Stone Hook - Multi-Function Tire Cleaner Tool to Prevent Blowouts
$7.14
JoanMiro 3D Printing Pen for Kids, Low-Temperature 3D Stereoscopic Drawing Toy, Perfect Gift for Boys and Girls on Children's Day
$29.90
Stainless Steel Tire Stone Removal Hook - Multi-Function Car Tire Cleaning Tool for Picking and Scraping Stones
$5.03
Cart Cover Rice Husk Charcoal Premium Plant Ash Grain Shell Carbon Natural Organic Fertilizer for Vegetables Succulents and Flowers
$6.55
Aojilong Automotive Plastic Restorer – Revives Black Trim, Repairs Aging, Crystal Coating Finish
$28.80
![[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)
