The Water Level Detection Sensor Module is a simple, compact, and highly sensitive liquid detection sensor designed to measure water levels, detect water droplets, and monitor liquid presence in various electronic and automation projects. This cost-effective sensor converts water level changes into analog signals, making it ideal for Arduino, ESP32, Raspberry Pi, STM32, and other microcontroller-based applications.

Using exposed conductive traces arranged in parallel on a high-quality FR4 PCB, the sensor detects the presence and volume of water by measuring conductivity across the detection area. The resulting analog output can be read directly by a microcontroller to monitor water levels, trigger alarms, activate pumps, or automate fluid management systems.

Its low power consumption, fast response, compact design, and easy integration make it suitable for water level monitoring, leakage detection, rain sensing, smart irrigation systems, reservoir monitoring, home automation, and industrial liquid sensing applications.

Features:

• High-sensitivity water level detection sensor

• Detects water droplets and liquid presence

• Analog output for precise liquid level measurement

• Low power consumption design

• Fast response and stable performance

• Direct interface with Arduino and microcontrollers

• High-quality FR4 PCB construction

• Double spray tin manufacturing process for durability

• Compact and lightweight design

• Easy installation and integration

• Cost-effective water sensing solution

• Suitable for water level alarms and automation systems

• Reliable performance in various environments

• Supports custom liquid level monitoring applications

Featured by BDTronics

BDTronics supplies carefully tested sensors and development modules for students, engineers, makers, researchers, and automation professionals. This Water Level Sensor Module is selected for its reliability, sensitivity, and compatibility with a wide range of microcontroller platforms and automation projects.

Specifications:

• Product Type: Water Level Detection Sensor Module

• Working Voltage: DC 3V – 5V

• Working Current: < 20mA

• Sensor Type: Analog (Simulation Output)

• Detection Area: 40mm × 16mm

• PCB Material: FR4

• Manufacturing Process: Double Spray Tin

• Mounting Hole Diameter: 3.2mm

• Operating Temperature: 10°C to 30°C

• Operating Humidity: 10% – 90% RH (Non-Condensing)

• Module Dimensions: 65mm × 20mm × 8mm

• Output Signal: Analog Voltage

• Interface: 3-Pin Sensor Interface

How to Use:

• Connect VCC to 3V–5V power supply

• Connect GND to system ground

• Connect analog output pin to the analog input of Arduino, ESP32, STM32, or other microcontrollers

• Position the sensor in the desired water detection area

• Read the analog value through software

• Monitor changes in analog readings to determine water level or liquid presence

• Configure alarms, pumps, relays, or automation functions based on sensor readings

• Ensure the sensor remains clean for optimal performance

Applications:

• Water level monitoring systems

• Water tank level detection

• Liquid level measurement

• Water leakage detection

• Rain detection systems

• Smart irrigation systems

• Home automation projects

• Reservoir monitoring

• Water overflow alarms

• Automatic pump control systems

• Agricultural monitoring systems

• Arduino sensor projects

• ESP32 IoT applications

• Industrial liquid monitoring

• Educational electronics projects

• DIY automation systems

Important Notes:

• Designed primarily for water detection applications

• Analog output value varies with water coverage area

• Not intended for long-term immersion in corrosive liquids

• Regular cleaning may improve sensor lifespan and accuracy

• Use appropriate waterproof housing for outdoor installations

Package Includes:

• 1 × Water Level Detection Sensor Module

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