Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	5V DC
Output Type	Digital Switch Output (0 and 1)
Comparator Chip	LM393
Sensing Area	Large-area nickel-plated lines
Power Indicator	Red LED
Output Indicator	Green LED
Adjustable Sensitivity	Yes, via potentiometer
PCB Dimensions	62mm x 20mm x 16mm
Mounting Hole Diameter	3.0mm
Application Scope	Rain detection, water level monitoring, leak alarms

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Great for learning electronics

Bought this for a university project on IoT home automation. The digital output makes it incredibly simple to read data without complex analog conversion code. Highly recommended for beginners.

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect for my weather station project

This sensor module works exactly as described. The sensitivity adjustment is very responsive, allowing me to calibrate it for light drizzle versus heavy rain. Easy to interface with my Arduino.

Anonymous

Mar 13, 2026

Rating: 5/5

Reliable water detection

I used this to detect leaks under my sink. It triggers the relay instantly when water touches the board. The separate PCB design allows me to place the sensor remotely from the control circuit.

Anonymous

Mar 09, 2026

Rating: 4/5

Works well, needs enclosure

The sensor itself is fantastic, but remember you need to 3D print or buy an enclosure if using it outdoors long-term, as the components are exposed. Functionality is top-notch though.

Anonymous

Mar 09, 2026

Rating: 4/5

Good value, sturdy build

The PCB looks well-made and the nickel plating on the sensing lines seems durable. I deducted one star because the included header pins were slightly bent, but nothing a quick fix couldn't solve.

Anonymous

Mar 03, 2026

Rating: 5/5

Excellent sensitivity range

The potentiometer gives a wide range of adjustment. I can set it to ignore humidity but trigger on actual water droplets. Very satisfied with this purchase for my smart garden system.

5 FAQ

Q: Can this module directly drive a 12V pump?

A: No, this module operates at 5V and the relay on board is typically rated for low current. You should use the module's signal output to control a separate transistor or higher-power relay driver for a 12V pump.

Q: Can I use this with a Raspberry Pi?

A: Yes, you can connect the digital output pin to a GPIO pin on the Raspberry Pi. Just ensure you are referencing the 5V logic levels correctly, as some Pi models prefer 3.3V logic; a voltage divider may be needed for the signal line.

Q: What is the response time when water is detected?

A: The response time is nearly instantaneous, typically within milliseconds, as it relies on the conductivity change detected by the LM393 comparator chip.

Q: Is the sensor pad replaceable if it corrodes?

A: The sensing lines are printed directly on the PCB. If they corrode significantly over years of use, the entire board would need replacement. However, the nickel plating is designed to resist oxidation for extended periods.

Q: Does this come with connecting wires?

A: The package usually includes the PCB module and a set of header pins for soldering. Connecting wires are generally not included, allowing you to cut them to your specific project length.

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

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

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

$48.00