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Water Level Depth Sensor Module

SKU: AQ0G1IDG8C
★★★★ ★ ★
4.3 (38 reviews)
The Water Level Depth Sensor Module is a compact resistive sensor designed for detecting water presence, liquid level, and approximate immersion depth in tanks, containers, reservoirs, and electronic monitoring systems. The sensor uses a series of exposed conductive traces arranged on the PCB surface. As the water level rises across the sensing area, the electrical conductivity between the traces changes,...
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The Water Level Depth Sensor Module is a compact resistive sensor designed for detecting water presence, liquid level, and approximate immersion depth in tanks, containers, reservoirs, and electronic monitoring systems. The sensor uses a series of exposed conductive traces arranged on the PCB surface. As the water level rises across the sensing area, the electrical conductivity between the traces changes, producing a variable analog output signal.

The module provides an analog output voltage that varies with the amount of the sensing area in contact with conductive liquid. This output can be read using the ADC input of a microcontroller and calibrated to represent dry, low, medium, or high water levels. Common modules operate from 3.3V to 5V DC and use a simple 3-pin interface consisting of VCC, GND, and Signal output.

With its compact design and easy analog interfacing, the sensor is suitable for water tank monitoring, rain detection, leak alarms, irrigation systems, aquarium monitoring, automatic pump control prototypes, and educational electronics projects. It can be used with Arduino, ESP32, ESP8266, STM32, Raspberry Pi with a suitable ADC, PIC, AVR, and other microcontroller platforms.

Key Features

  • Detects water presence and approximate liquid level
  • Resistive conductivity-based sensing principle
  • Analog output proportional to water contact area
  • Approximately 40mm active detection length
  • Wide operating voltage range from 3.3V to 5V DC
  • Simple 3-pin interface
  • Compact and lightweight PCB design
  • Fast response to changing water levels
  • Low power consumption
  • Easy connection to microcontroller ADC inputs
  • Suitable for water leak detection
  • Can be calibrated for different level thresholds
  • Suitable for tank and container monitoring
  • Useful for automatic pump control projects
  • Compatible with popular development boards
  • Ideal for educational and DIY electronics projects

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Sensor Type: Resistive Water Level / Depth Sensor
Measurement Type: Water Presence and Approximate Liquid Depth
Sensing Principle: Conductivity Between Exposed PCB Traces
Operating Voltage: 3.3V to 5V DC
Output Type: Analog Voltage Signal
Signal Interface: Analog Output
Number of Pins: 3
Pin Interface: VCC, GND and Signal
Detection Area: Approximately 40mm × 16mm
Maximum Detection Depth: Approximately 40mm Along the Active Sensing Area
Typical Module Length: Approximately 60mm to 65mm
Typical Module Width: Approximately 20mm
PCB Thickness: Approximately 1.5mm
Current Consumption: Module Dependent; commonly specified below approximately 20mA, though some versions may draw more depending on immersion and supply voltage
PCB Material: FR4
Sensor Surface: Exposed Conductive Traces
Operating Humidity: Approximately 10% to 90% RH, Non-Condensing Outside the Sensing Area
Operating Temperature: Module Variant Dependent
Mounting Type: Direct Immersion of Active Sensing Area
Compatibility: Arduino UNO, Nano, Mega, ESP32, ESP8266, STM32, Raspberry Pi with ADC, PIC, AVR, RP2040 and other ADC-equipped controllers.

Additional Resources

Depth Sensor.PDF

FAQ

1. What is the Water Level Depth Sensor Module used for?

The sensor is used to detect water presence and estimate approximate water level over its active sensing area. It is commonly used in water monitoring, leak alarms, irrigation systems, aquariums, overflow detection, and microcontroller projects.

2. How does the Water Level Depth Sensor Module work?

The sensor uses exposed conductive traces on its PCB. As more of the sensing area comes into contact with conductive liquid, the electrical resistance between the traces changes, producing a varying analog output signal.

3. Can the Water Level Depth Sensor be used with Arduino and ESP32?

Yes. The module can be used with Arduino, ESP32, ESP8266, STM32, PIC, AVR, and other controllers with analog input capability. Raspberry Pi boards require an external ADC for direct analog measurement.

4. Can this sensor measure the exact depth of a large water tank?

No. This compact sensor measures water contact only across its relatively short active sensing area, typically around 40mm. It is suitable for small-range level detection and threshold monitoring rather than measuring the full depth of a large tank.

5. Can the Water Level Sensor remain continuously submerged and powered?

Continuous powered immersion is not recommended for long-term use because the exposed conductive traces can gradually corrode due to electrochemical effects. For improved service life, the sensor can be powered only when a measurement is required.