Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 5V DC |
| Sensor Type | Large-Area Rain Drop Detection |
| Output Signal | Digital Switch (DO) and Analog (AO) |
| Relay Contact | Dry-Contact Switch |
| PCB Dimensions | 60mm x 40mm |
| Sensitivity | Adjustable via Potentiometer |
| Indicator LED | Power and Trigger Status |
| Mounting Holes | 4x 3mm Diameter |
| Compatible Platforms | Arduino, Raspberry Pi, ESP32 |
| Application | Water Level Detection, Automatic Wipers, Weather Stations |
Anonymous
Mar 31, 2026
Rating: 4/5
Good sensitivity, easy to adjust
The potentiometer allows for precise tuning of sensitivity. I use it to close my greenhouse windows when it rains. Only minor issue is the soldering pads are a bit small for thick wires.
Anonymous
Mar 28, 2026
Rating: 5/5
Excellent component for automation
We used ten of these for a community garden irrigation system. They have been running for three months without failure. The response time is very fast.
Anonymous
Mar 22, 2026
Rating: 5/5
Great value for education
Bought this for a university robotics project. It's robust, clearly labeled, and the documentation online is helpful. The dry-contact switch feature is exactly what we needed for safety isolation.
Anonymous
Mar 21, 2026
Rating: 4/5
Works as advertised
Simple plug-and-play with 5V logic. The analog output is useful for measuring rain intensity, not just presence. Would recommend adding a conformal coating if using outdoors long-term.
Anonymous
Mar 16, 2026
Rating: 5/5
Reliable water detection
I've tested this in heavy rain and it triggers instantly. The build quality feels solid, and the PCB coating seems to protect the traces well from corrosion over time.
Anonymous
Mar 09, 2026
Rating: 5/5
Perfect for my weather station project
This sensor works flawlessly with my Arduino setup. The large area detects even light drizzle quickly, and the relay output makes it easy to trigger external devices without extra coding.
Q: Can I use this with a 3.3V microcontroller like ESP8266?
A: Yes, but please note the relay coil requires 5V to activate reliably. You can power the module with 5V and connect the digital output to the 3.3V MCU, as the output is usually compatible, but check your specific logic levels.
Q: What is the maximum current the relay can handle?
A: The onboard relay is typically rated for up to 10A at 250VAC or 30VDC. Please refer to the specific relay model printed on your unit for exact specifications.
Q: Is the sensor sensitive enough to detect mist or fog?
A: The sensitivity is adjustable via the blue potentiometer. While it can detect heavy mist, it is primarily designed for raindrops and standing water. You may need to tune it carefully for fog.
Q: Can this module directly control a 12V water pump?
A: Yes, the onboard relay supports dry-contact switching. You can connect the 12V pump circuit to the relay terminals, while the module itself is powered by 5V.
Q: Does this come with connecting wires?
A: No, the module is sold without jumper wires or cables. You will need to source standard Dupont wires or solder your own connections based on your project needs.
Chengdu University City Laboratory Exhaust Piping and High-Purity Gas Pipeline Engineering - Consultation Welcome
$33,610.00
Premium Factory Supply Decorative Chains - Pendant Light Chains, Advertising Sign Hanging Chains, Anti-Static Iron Chains, Small Iron Links
$61.15
![[Damai Holds Micro-Needle Hair Transplant Patent] Precision Eyebrow Transplant – Custom Aesthetic Design](https://www.gosteppe.com/cache/small/product/269162/legacy-main-c1f4dd8da327a142f48d9814.webp)
[Damai Holds Micro-Needle Hair Transplant Patent] Precision Eyebrow Transplant – Custom Aesthetic Design
$12,797.60
Commercial Dumpling & Bun Filling Machine – Automatic Stainless Steel Vegetable Chopper
$4,400.00
HVAC Fan VFD Control Cabinet with Power Frequency to Variable Frequency Conversion
$1,238.00
Export Quality Original Bathroom Paint Pens, Yellow and Green (2-Pack), Draw on Tiles and Glass
$4.93
Imported Automotive Transmission Differential Bearing B39-4 580704A
$338.00
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
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[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)
