High Sensitivity Water Level Sensor compatible with Arduino
High Sensitivity Water Level Sensor
Overview
Low-cost water level detection sensor module
Designed for Arduino and other microcontrollers
Detects water presence, level, and leakage
Works using conductive trace technology
Working Principle
Sensor has parallel exposed conductive traces
Water bridges the traces conductivity increases
Voltage changes across traces
Output sent as analog signal (water level indication)
More water contact = higher output signal
Key Specifications
Operating Voltage: 3V 5V DC
Current Consumption: < ~4.2V)
Detection Area: ~40 16 mm
Working Temperature: 10C 30C
Humidity Range: 10% 90% RH
Pin Configuration
S (Signal) Analog output
VCC 3.3V / 5V
GND Ground
Features
High sensitivity to water droplets and levels
Analog output for level measurement
Low power consumption
Simple and compact design
Easy interface with Arduino
Applications
Water tank level monitoring
Rain detection systems
Leakage detection
Smart irrigation systems
Liquid presence sensing
Usage Tips
Avoid long-term exposure may cause corrosion of traces
Use intermittent power (ON/OFF) to increase lifespan
Clean sensor regularly for accuracy
Use protective coating (optional) for durability
Advantages
Very low cost
Easy to use
High sensitivity
Direct analog output (no complex processing)
Limitations
Prone to corrosion over time (electrolysis effect)
Not suitable for long-term submerged use
Accuracy affected by water impurities
Not ideal for precise level measurement
Summary
A simple high-sensitivity water level sensor
Outputs analog signal proportional to water contact
Best for basic detection and DIY projects