Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switch Output (0 and 1) |
| Analog Output | Yes, variable resistance based on wetness |
| PCB Size | 60mm x 20mm |
| Comparator Chip | LM393 |
| Sensitivity | Adjustable via potentiometer |
| Indicator LED | Power and Trigger status LEDs included |
| Mounting Holes | 4 x 3mm diameter holes |
| Connector Type | 3-Pin PH2.0 or Dupont compatible |
| Application | Rain detection, water level monitoring, weather stations |
Anonymous
Mar 29, 2026
Rating: 5/5
Reliable and fast response
I've tested several rain sensors and this one has the fastest reaction time. As soon as a drop hits, the digital pin flips. Excellent for protecting outdoor electronics.
Anonymous
Mar 21, 2026
Rating: 4/5
Good sensor, needs protection
The module itself is great, but the exposed nickel plating will corrode over time if left in the elements without a conformal coating. Once I sprayed it with clear coat, it has been working for months.
Anonymous
Mar 14, 2026
Rating: 4/5
Great value for learning projects
Bought this for a university weather station project. It's cheap and effective. The analog output gives nice granular data on how heavy the rain is. Just make sure to coat the contacts if leaving outside long-term.
Anonymous
Mar 10, 2026
Rating: 5/5
Perfect for my automated garden system
This sensor works exactly as described. I connected it to my Arduino to trigger a cover when it starts raining. The sensitivity adjustment is very responsive and easy to dial in.
Anonymous
Mar 09, 2026
Rating: 5/5
Bulk buy for our club
Ordered ten of these for our high school robotics club. All of them worked out of the box. Great teaching tool for explaining analog vs digital signals.
Anonymous
Mar 04, 2026
Rating: 5/5
Easy to integrate with ESP32
Plug and play with my ESP32 setup. The voltage range is flexible enough to run directly off 3.3V logic without level shifters. Very happy with the purchase.
Q: Does this come with connecting wires?
A: The module typically comes without pre-attached wires, but it has standard 0.1-inch pitch pins compatible with Dupont jumper wires, which are sold separately.
Q: Is the output signal 5V tolerant if I use a 3.3V microcontroller?
A: Yes, the module operates between 3.3V and 5V. If you power it with 3.3V, the output high will be 3.3V, which is safe for your microcontroller. If powered by 5V, you may need a voltage divider or level shifter for the data pin.
Q: How do I adjust the sensitivity threshold?
A: There is a blue potentiometer on the back of the PCB. Turn it clockwise to increase sensitivity (trigger with less water) or counter-clockwise to decrease it.
Q: What is the expected lifespan if left outdoors permanently?
A: While the electronics are durable, the exposed sensing traces are prone to oxidation over time. We recommend applying a thin layer of conformal coating or epoxy to the traces (avoiding the adjustment pot) to extend its life outdoors.
Q: Can this sensor detect standing water or only falling rain?
A: This module can detect both. The sensing traces act as a variable resistor; whether water falls on it or it is submerged, the conductivity changes and triggers the output.
JMC Yusheng & Yuhu Parts – Crankshaft Position Sensor, Signal Sensor, Original Equipment
$95.00
![[10% Off for 2 Items] Calligraphy Wool Felt Mat - Double-Sided Painted Practice Pad for Students, Bulk Wholesale, Includes Arm Rest and Four Treasures of the Study Set](https://www.gosteppe.com/cache/small/product/269490/legacy-main-410a655856aab1e0462d6c84.webp)
[10% Off for 2 Items] Calligraphy Wool Felt Mat - Double-Sided Painted Practice Pad for Students, Bulk Wholesale, Includes Arm Rest and Four Treasures of the Study Set
$6.63
Leak-Proof Retainer Case with Double-Layer Filter for Braces, Aligners, and Dentures - Portable Cleaning and Soaking Box
$22.50
Car Tire Stone Removal Hook Tool, Explosive Tire Prevention Gadget, Durable Zinc Alloy Tire Cleaning Hook for Automotive Care
$10.90
![[Damai Micro-Needle Hair Transplant Patent] Micro-Needle Planting (500 Units) - Suitable for Temples and Hairline](https://www.gosteppe.com/cache/small/product/269486/legacy-main-da7e0cd07f3b7d2f88646684.webp)
[Damai Micro-Needle Hair Transplant Patent] Micro-Needle Planting (500 Units) - Suitable for Temples and Hairline
$4,500.00
Japan Original FEC Lifting Chain - Specialized for Electric Hoist, 6.3mm Diameter Carburized Lifting Chain
$223.00
X-RAY Coating Thickness Gauge - Desktop Tianrui Professional Analyzer for Metal Electroplating Layers
$9,589.60
Heavy Truck Tire Cleaning Strips - Wear-Resistant Mud Flaps and Inner Tube Skirts - Decorative Tire Tassels
$9.05
Mixue Bingcheng Tanned Snow King Blind Box Figure Girls Gift Birthday Cute Plush Keychain Holiday Present
$21.01
Smart Battery Tester with Full Protection - Performance Detector for EV and Car Batteries
$269.00
Schneider Leakage Switch IC65 Vigi C120H 2/4P D80/100/125A Leakage Circuit Breaker
$1,347.75
Wenxin Tang Pumpkin-Shaped Ceramic Water Pot - Small Celadon Glaze Brush Washer for Chinese Calligraphy
$18.50
Dehua Mutton Fat White Porcelain Brush Washer - Minimalist Modern Ceramic Water Pot and Scholar's Desk Ornament
$39.70
Lifting Chain Slings, Four-Leg Chain Rigging with Hooks and Shackles, Manganese Steel Chains for Crane Hoisting
$79.20
Taikang Bybo Dental Straumann ITI Dental Implant Metal Abutment TK
$8,330.00
Factory Supply Adjustable Radish Strip Cutter, Multi-Function Vegetable Slicer for Green Radishes
$5,395.00
Magnetic Cable Organizer - Desktop Phone Charging Data Cord Management Stand and Car Mount Clip
$13.45
Yuanhao Irregular Ticket-Style Watercolor Paper Stamp Blank Journal Sheet Postcard Creative Card Bookmark 300g Cotton Pulp Fine Texture Thickened Serrated Edge for Art Students Hand Drawing
$5.32
Residential & Commercial Entrance Nameplate Japanese Wabi-Sabi Style Sign Brass Stainless Steel Wall Light Customizable
$328.00
Carton Packaging Machinery - New Model 2000 Semi-Auto Gluing Machine, Case Sealer, Pressure-Type
$5,000.00
Shandong Manufacturer Household Waste Compactor - Horizontal Transfer Station Equipment for Communities
$44,160.00
460 Fast-Drying Adhesive for Shoes, Ceramics, Wood, Metal, and Plastic, No Whitening Effect
$34.50
231 "Embroidered Plant Garden" Handmade Travel Watercolor Sketchbook Journal Baohong Rubens
$49.00
Beginner Watercolor Painting Line Art Coloring Book: Geisha Theme, Japanese Style Fine Grain, Two-Pack Free Shipping
$10.60
White Clay Tea Brewing Pot, Ceramic Jar, Japanese-style High-temperature Side-handle Teapot and Coffee Pot
$92.00
Michelin Tires 215 225 235 245 255 265/40 45 50 55 60R17 18 19 20
$268.00
![[Damai Holds Micro-Needle Hair Transplant Patent] O-Type Hair Loss | 2500 Grafts Crown Planting by Professional Hair Transplant Clinic](https://www.gosteppe.com/cache/small/product/269464/legacy-main-204729c71a0ebedeeed4d309.webp)
[Damai Holds Micro-Needle Hair Transplant Patent] O-Type Hair Loss | 2500 Grafts Crown Planting by Professional Hair Transplant Clinic
$24,999.00
Brand New Genuine Michelin Tire 275/50R20 109W LATITUDE SPORT 3 - Compatible with Mercedes-Benz GLE
$1,520.00
Bridgestone Quiet Tires 205/215/225/235/245/255/265/R16 R17 R18 R19 R21
$263.00
VFD Cabinet for Constant Pressure Water Supply, PLC-Controlled Fan & Pump System, 4KW, Star-Delta Wiring
$1,351.00
![[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)
