Attributes

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

6 reviews

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.

5 FAQ

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.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

Serial SHT20 Chip Temperature and Humidity Sensor Test, SHT30 Chip Measurement and Monitoring Module by Viter Intelligence

$11.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

3-Wire/4-Wire Flame Sensor Module, Fire Source Detection with IR Receiver, Flame Detection and Alarm

$1.08

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

HX711 Pressure Sensor Module Electronic Scale Bracket Weighing DIY Scale Pan Tray Set 5/10/40kg200

$3.28

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

Thin Film Pressure Sensor Display, USB Rechargeable Flexible Resistive Pressure Digital Display Module, Wide Range Wireless

$20.00

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

GY-30 302 Digital Light Intensity Illuminance Sensor BH1750FVI Module Light Sensor Ball

$7.41

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Metal Detector Module Non-Contact Metal Induction Sensor Detection Module Metal Detector

$8.70

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

E18-D80NK Infrared Obstacle Avoidance Sensor Proximity Switch Smart Robot Car 10-80cm

$6.30

Digital 38KHz Infrared Receiver/Transmitter Head Sensor Module for Electronic Building Blocks Robots, Infrared Communication Remote Control

$2.80

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

MPU-9255 9-Axis Attitude 3-Axis Electronic Compass Accelerometer Gyroscope Magnetic Field Sensor Module

$13.42

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Soil Moisture Sensor Probe Soil Moisture Meter Detection Module Sensor Separate Probe

$2.39