Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 5V DC |
| Detection Area | Large Surface Pad |
| Output Type | Digital Switch (DO) & Analog (AO) |
| Relay Capacity | 5V Trigger, up to 10A Load |
| Sensitivity | Adjustable via Potentiometer |
| PCB Dimensions | 60mm x 20mm |
| Mounting Holes | 4x 3.1mm Diameter |
| Indicator LED | Power and Trigger Status |
| Connector Type | PH2.0 3-Pin and Screw Terminal |
| Application | Rain Alarm, Water Level Detection, Auto Wipers |
Anonymous
Mar 27, 2026
Rating: 5/5
Excellent component for the price
Very impressed with the large surface area compared to smaller sensors I've used before. It reduces the chance of missing a rain event due to wind direction. Highly recommended for anyone building weather stations.
Anonymous
Mar 14, 2026
Rating: 5/5
Reliable water detection
I used this to detect overflow in a water tank. It has been running outdoors under a protective mesh for two weeks without false alarms. The build quality of the PCB looks solid and the gold plating on the traces seems durable.
Anonymous
Mar 14, 2026
Rating: 5/5
Perfect for my smart garden project
This sensor works exactly as described. The large detection area makes it very responsive to even light drizzle. I connected it to an Arduino and the relay triggered instantly when water was applied. Great value for the price.
Anonymous
Mar 14, 2026
Rating: 5/5
Great for learning electronics
Bought this for a university project on home automation. The documentation online is plentiful, and the module is very straightforward to interface with microcontrollers. The LED indicators help a lot during debugging.
Anonymous
Mar 10, 2026
Rating: 4/5
Works well for automatic wipers
Integrated this into a prototype for automatic windshield wipers. The response time is fast enough for safety applications. Just ensure you seal the connections if using it in a high-humidity environment long-term.
Anonymous
Mar 10, 2026
Rating: 4/5
Good sensitivity, easy to calibrate
The potentiometer allows for fine-tuning the threshold, which is essential depending on how much rain you want to trigger the alarm. The only minor issue is that the screw terminals are a bit small for thick wires, but standard jumper wires fit perfectly.
Q: Does this come with the connecting wires?
A: The package typically includes the module only. You will need to source your own Dupont jumper wires or solder wires to the screw terminals depending on your setup. Some seller bundles may include wires, so please check the specific listing options.
Q: Can this module directly control a 12V water pump?
A: The module itself operates at 5V, but the onboard relay can switch higher voltages. Please check the specific relay rating printed on the component (usually 10A at 250VAC or 30VDC). As long as your 12V pump draws less than the relay's maximum current, it will work safely.
Q: What is the difference between the DO and AO pins?
A: DO (Digital Output) provides a simple HIGH/LOW signal when the water threshold is crossed, which is adjustable via the potentiometer. AO (Analog Output) provides a voltage proportional to the conductivity of the water, allowing you to measure intensity or water level depth in code.
Q: Is the sensor pad resistant to corrosion over time?
A: The exposed traces are gold-plated to resist oxidation and corrosion. However, for permanent outdoor installation, we recommend applying a conformal coating to the non-sensing parts of the PCB and ensuring the sensor pad is cleaned periodically to remove debris.
Q: Can I use this with a Raspberry Pi?
A: Yes, you can use it with a Raspberry Pi. Connect the VCC to 5V (or 3.3V if the module supports it, though 5V is safer for the relay), GND to GND, and the DO pin to a GPIO input. Remember to use a pull-up or down resistor configuration in your code if necessary, though the module usually handles the logic levels well.
401 Silicone-Specific Adhesive for Bonding Metal, Plastic, TPU, TPR, ABS; Silicone-to-Silicone Bonding Without Surface Treatment
$21.96
G80 Chain Slings for Lifting - Heavy Duty Iron Chains with Shackles and Hooks, 4-Leg Configuration, Available in 1m/2m Lengths and 6t/8t/10t Capacities
$312.70
Aromatherapy Essential Oil Humidifier for Home Bedroom - Long-Lasting Fragrance Diffuser, Portable Plant Incense for Car
$8.88
Professional Sketching Blending Stumps and Scrapers - Detail Shading Tools for Art Students
$3.28
Yuanhengtong Pen-Type Dissolved Oxygen Meter YHT8402 - For Freshwater Aquaculture Ponds (Fish & Shrimp)
$802.30
Smart Food Waste Disposer Smart Food Waste Processing Device Smart Kitchen Waste Treatment Unit
$12,899.00
Westwood Portable Invisible Braces Case - Orthodontic Retainer and Denture Cleaning Box
$16.80
Lifting Chain with Adjuster Forklift Crane Chain Adjustable Length Manganese Steel Chain Bundling Lifting Chain with Hooks
$54.00
Smokeless and Odorless Tea Light Candles - 2-Hour or 4-Hour Burn Time, 100 Pack for Wax Seals and Aromatherapy
$4.80
Commercial Roast Duck and BBQ Meat Warmer Display Case - Constant Temperature Heating Cabinet for Crispy Pork Belly and Hanging Ducks
$755.00
Custom Company Signage, Temporary Bank Account Opening Signs, Door Plates, Acrylic Advertising Displays, and Nameplates
$17.00
Imported USA PELICAN 1510 Safety Case, 20-Inch Rolling Luggage for DSLR Cameras and Moisture Protection
$39.20
Fully Automatic 801 Vegetable Cutter, Large Dual-Head Slicing/Dicing Machine for Cafeterias
$7,972.00
Cross-Border Beach Bag - Outdoor Waterproof Dry Bag with Mesh for Rafting, Swimming, and Trekking
$49.60
Commercial Square Constant-Temperature Heating Cabinet Countertop Display Case for Roast Duck, Chicken, Fried Chicken, Smoked Goose, and BBQ
$658.00
Large Capacity Thickened Waterproof Handbag - Blow Crossbody Shoulder Bag for Travel and Daily Motorcycle Use
$127.00
Art Student Absorbent Towel for Watercolor, Oil, Acrylic Paints, Palette Paper, Traditional Chinese Painting - Double-Sided Cloth for Kids and Students
$2.72
![[Damai Micro-Needle Hair Transplant Patent] Hairline, Temple, and Crown Restoration for Thinning Hair](https://www.gosteppe.com/cache/small/product/269380/legacy-main-b8319f73332000b9684f1d64.webp)
[Damai Micro-Needle Hair Transplant Patent] Hairline, Temple, and Crown Restoration for Thinning Hair
$7,999.00
Feileniao Traditional Chinese Painting Set with Line Art for Coloring on the Go
$72.00
Export to USA Small Flower Pots More Beautiful Than Flowers Succulent Pots/Ceramic Pots/Letter Series
$41.00
![[Group 13 Full Payment Pre-order] Thin Mint Fufu Hawthorn Berry Mint Chocolate Lolita Dog-Short Fishbone Puffy Skirt](https://www.gosteppe.com/cache/small/product/269377/legacy-main-2abe2d26b4ec6ed6eaec28bf.webp)
[Group 13 Full Payment Pre-order] Thin Mint Fufu Hawthorn Berry Mint Chocolate Lolita Dog-Short Fishbone Puffy Skirt
$25.00
Wenxin Tang Cao Quan Stele Han Clerical Script Cards - Beginner Calligraphy Practice for Adults, Brush Writing Copybooks
$136.00
'Eki (Station)' by Mariya Takeuchi - Mr. Chui Saxophone Trio Precise Transcription Service
$37.00
Pad Printing Machine Accessories: 4*4 Aluminum Ink Cup, Ink Tray, Ink Container, and Ink Trough
$40.00
KUDIS Commercial & Industrial Vacuum Cleaner - High-Power Wet/Dry Unit for Workshop Dust, Factory Floors, Warehouses, and Concrete Surfaces
$5,200.00
Rubber Speed Bump End Cap Heavy-Duty 1 Pack
$72.46
Front Wiper Arm Assembly for Citroën C-Elysée, Xsara Picasso, Peugeot 307/301
$35.00
Underbite Corrector Case - Portable Magnetic Lanyard Storage Box for Frankel Appliance and TB Palatal Expander
$22.70
Car Tire Stone Removal Tool, Multi-Function Hook for Picking and Extracting Stones from Treads
$6.43
Outdoor Lamp Stand for Camping, Lantern Holder Pole for Street Vending and Night Fishing
$13.89
![[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)
