Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switch Output (0 and 1) |
| Detection Area | 40mm x 16mm |
| Comparator Chip | LM393 |
| Sensitivity | Adjustable via Potentiometer |
| PCB Size | 63mm x 20mm x 8mm |
| Mounting Hole Diameter | 3.1mm |
| Interface | 3-Pin PH2.0 Connector |
| Application | Water Leak Detection, Liquid Level Monitoring |
| Package Includes | 1x Water Level Sensor Module |
Anonymous
Mar 27, 2026
Rating: 5/5
Perfect for my Arduino rain alarm
This sensor works exactly as described. The sensitivity adjustment is very responsive, allowing me to trigger the alarm only when a significant amount of water is present. Great value for the price.
Anonymous
Mar 24, 2026
Rating: 5/5
Exceeded expectations
Very sensitive and accurate. I tested it with different water depths and the digital output switches cleanly without bouncing. Highly recommended for automation tasks.
Anonymous
Mar 18, 2026
Rating: 5/5
Reliable leak detector
I placed this under my washing machine connected to a smart home hub. It detected a small drip immediately. Peace of mind is worth every penny.
Anonymous
Mar 15, 2026
Rating: 4/5
Solid build quality
The PCB looks professional and the traces are thick enough. The only reason for 4 stars is that the connector cable was a bit short for my specific setup, but that's an easy fix.
Anonymous
Mar 09, 2026
Rating: 5/5
Great for school projects
Bought this for a high school electronics project. It was easy to interface with our microcontroller and the documentation online helped us get it running in minutes.
Anonymous
Mar 08, 2026
Rating: 4/5
Good sensor, needs calibration
Works well for monitoring my plant watering system. You definitely need to spend time calibrating the potentiometer to get the right threshold, but once set, it is reliable.
Q: Can this be used for saltwater applications?
A: While it will detect saltwater, prolonged exposure may cause corrosion on the exposed copper traces. We recommend coating the traces with a conformal coating if used in corrosive environments.
Q: Can this sensor measure the exact depth of the water in millimeters?
A: No, this module provides a digital switch output (high/low) based on a threshold you set. It detects presence or absence of water above a certain level, not continuous depth measurement.
Q: Does the package include connecting wires?
A: The standard package includes the sensor module only. Connecting wires or jumper cables need to be purchased separately unless specified in a bundle deal.
Q: How do I adjust the sensitivity?
A: There is a blue potentiometer on the board. Use a small screwdriver to turn it clockwise to increase sensitivity or counter-clockwise to decrease it while testing with water.
Q: Is this module compatible with Raspberry Pi GPIO pins?
A: Yes, it is compatible. Since it operates at 3.3V-5V and outputs a digital signal, you can connect the DO pin directly to a Raspberry Pi GPIO input pin.
Fully Automatic Carbon Steel and Stainless Steel Filter, Self-Cleaning Vertical Filter, Automatic Blowdown Filter
$37,500.00
Sheepskin Rattle for Babies 0-3 Years - Chewable Intangible Cultural Heritage Handmade Toy with Solid Wood and Brass Shaker Stick, Newborn Gift Box
$12.78
Swiss ITI Dental Implant / Korean Imported Dentium Implant Package with Crown - Shanghai Hospital
$3,980.00
Yandi Retainer Storage Case - Double-Layer Drain & Soak Box for Invisible Aligners and Orthodontic Cleaning
$30.50
Leaf-Shaped Template Stamp for Kids - Transparent Silicone DIY Mold with Sponge for Maple Leaf Rubbing and Painting
$4.93
High-Speed Internal Clamping Double Diaphragm Coupling High Torque Servo Motor Leadscrew Module Elastic Coupler
$367.30
Eye-Care Journaling Highlighters for Students - Colorful Markers for Note-Taking and Key Points
$3.02
Natural Stone Abacus Beads with Large Holes 5*10mm White Crystal Rose Crystal Flat Beads Jewelry Accessories Semi-Precious Stones
$1.50
Heavy-Duty Lifting Chain with Shackles at Both Ends - Manganese Steel Hoist for Pipes, Rebar, and Stones
$72.00
Industrial Large Roll Oil-Absorbent Paper, Jumbo Lint-Free Wiping Rolls, Cleaning Paper, Wholesale Industrial Jumbo Rolls
$150.00
5-Inch Flocked Scouring Pad, Stainless Steel Rust Removal and Polishing Disc, Circular Brush Cloth with Backed Flocking for Polishing
$25.00
High-Temperature Fire-Resistant Cotton Incense Burner Mat, Flame-Retardant Pad for Stick Incense Boxes and Aromatherapy Burners, Heat Insulation for Burning Incense
$2.98
80 Pairs Zhuji Ankle Socks, Solid Color All-Season Trendy Student Casual Sports Boat Socks, Disposable Short Socks
$9.14
Smart Toilet Storage Rack for Bathroom, Multi-Tier Floor-Standing Organizer with Waterproof Tissue Holder
$273.00
Yihuashu Calligraphy Felt Mat - Thickened Grid Cloth for Student Practice, Brush Writing Pad
$1.98
![Xiankan Yunshu [Danran] Ceramic Brush Washer - Hand-Painted Elegant Lily Design under Glaze for Calligraphy Supplies](https://www.gosteppe.com/cache/small/product/269142/legacy-main-f8acbab3a83eee11ff108718.webp)
Xiankan Yunshu [Danran] Ceramic Brush Washer - Hand-Painted Elegant Lily Design under Glaze for Calligraphy Supplies
$32.90
Chunfei Grocery Store Commuter Hard Fork Low-Step Mountain Bike for Road, City, Suburb, School, and Outings
$2,224.64
Zhang Xiaofeng 'Fu Lu' Hotpot Inkstone Set – Covered Ceramic Ink Well for Calligraphy and Chinese Painting
$38.00
Invisalign Orthodontic Retainer Case, Portable Storage and Cleaning Box for Aligners and Dentures
$12.30
Natural 7A Lavender Loose Beads Single Round Bead DIY Amethyst Spacer Beads Jewelry Making Semi-Finished Accessories
$0.88
Paint Brush Cleaner - Mini Toilet Style Rinser for Watercolor and Gouache, Art Supply with Circulating Water System
$16.90
Traditional Wooden Rattle Drum with Sheepskin Head for Early Education, Visual Tracking and Hearing Training for Newborn Boys and Girls
$10.80
Car Tire Stone Removal Hook, Stainless Steel Multi-Function Tool for Cleaning Pebbles from Tires
$6.21
Factory Direct Mining Round Link Chains - High Cost-Performance Lifting Chains for Mining Applications
$153.00
Hangzhou Stomatological Hospital Dental Implant Initial Consultation Package – CT Scan, Missing Tooth Exam, and Custom Implant Plan Design
$1.00
Rockschool Acoustic Guitar Method Book (Chinese Edition) – Folk & Rock Guitar Grading Curriculum for Schools
$145.00
Commercial Food Warmer Cabinet, Small Heating Thermostat Display Counter for French Fries, Egg Tarts, Enlarged Chestnuts, and Fried Chicken
$334.00
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
![[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)
