Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	5V DC
Sensor Type	Resistive Rain Drop Detection
Detection Area	Large-Area PCB Board
Output Signal	Digital Switch Output (0 and 1)
Comparator Chip	LM393 Wide Voltage Comparator
Sensitivity Adjustment	Potentiometer Adjustable
Indicator LED	Power and Trigger Status LEDs
Mounting Holes	4mm Diameter for Easy Installation
Compatibility	Arduino, Raspberry Pi, ESP32, STM32
Application	Weather Stations, Automatic Wipers, Smart Home

6 reviews

Anonymous

Mar 24, 2026

Rating: 4/5

Good module, needs calibration

Works well once you spend a few minutes calibrating the sensitivity. Out of the box, it was a bit too sensitive for my location, but after tweaking, it performs flawlessly. Fast shipping too.

Anonymous

Mar 22, 2026

Rating: 5/5

Sturdy and effective

The PCB looks professional and the components are securely mounted. I tested it under a shower head to simulate rain, and the reaction time was instant. Great addition to my weather station kit.

Anonymous

Mar 20, 2026

Rating: 5/5

Perfect for my automated garden system

This module works exactly as described. The large sensing area picks up rain drops quickly, and the sensitivity potentiometer makes it easy to fine-tune for light drizzle versus heavy storms. Integrated it with my Arduino project without any issues.

Anonymous

Mar 14, 2026

Rating: 4/5

Great value, simple to use

Very responsive sensor. The digital output is clean and ready for microcontrollers. I deducted one star because the soldering pads are a bit small for thick wires, but for standard jumper wires, it's perfect.

Anonymous

Mar 13, 2026

Rating: 5/5

Reliable weather detection

I've been using this for three months now to trigger my window closers when it rains. It has never failed to detect precipitation. The build quality feels solid for the price point.

Anonymous

Mar 10, 2026

Rating: 5/5

Excellent sensitivity range

The ability to adjust the threshold via the potentiometer is a game changer. You can set it to ignore minor humidity changes and only react to actual water droplets. Highly recommended for students and hobbyists.

5 FAQ

Q: Can this module be used directly with a 3.3V microcontroller like the ESP8266?

A: Yes, while the module operates at 5V, the digital output is generally compatible with 3.3V logic levels. However, for maximum safety and stability, we recommend using a voltage divider or a logic level converter if your specific board is sensitive.

Q: Is the sensor board waterproof or just water-resistant?

A: The sensing board itself is designed to get wet as it detects rain, but the comparator module (the blue/black part with the chip) should be kept dry or housed in a waterproof enclosure to prevent damage to the electronics.

Q: What is the maximum current this relay can switch?

A: Please note that this specific model features a digital signal output, not a built-in high-power relay. It outputs a signal to tell your microcontroller to trigger a separate relay module if you need to switch high-voltage devices.

Q: How do I clean the sensor if it gets dirty from dust or mud?

A: You can gently wipe the sensing board with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials that could damage the conductive traces on the PCB. Ensure it is completely dry before powering it on again.

Q: Does this come with connecting wires?

A: The package typically includes the sensor module and the controller board. Jumper wires are usually not included, so please ensure you have male-to-female or male-to-male Dupont wires available for your project.

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

5A Range Current Transformer Module Voltage Sensor Single-Phase AC Active Output Current Transmitter

$5.06

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

AHT10 High-Precision Digital Temperature and Humidity Sensor Measurement Module I2C Communication Replaces sht20

$7.88

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

Ningbo Keli SQB Cantilever Beam Weighing Module Sensor 100kg 500kg 1t 2t 3 Ton Small Floor Scale Inductor

$48.00