Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Signal	Analog & Digital (DO)
Compatible Platforms	Arduino, STM32, 8051, ESP32
Detection Type	Conductive Liquid Level
PCB Dimensions	65mm x 20mm x 8mm
Sensing Length	40mm exposed traces
Current Consumption	< 20mA during operation
Interface	3-Pin Header (VCC, GND, SIG)
Material	FR-4 with Gold Plated Traces
Included Resources	Source Code & Schematic Diagram

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Excellent for educational kits

Bought ten of these for our robotics club. They are durable enough for student handling and the digital output makes logic simple for beginners. Highly recommended.

Anonymous

Mar 27, 2026

Rating: 5/5

Source code saved me hours

The included library and example sketches worked out of the box. No debugging needed for the basic setup. The trace spacing is perfect for detecting small level increments.

Anonymous

Mar 26, 2026

Rating: 4/5

Good sensitivity, needs calibration

Works well on my STM32 board. You do need to adjust the potentiometer for your specific liquid conductivity, but once set, it triggers reliably. Documentation could be slightly better.

Anonymous

Mar 17, 2026

Rating: 5/5

Perfect for my rain gauge project

This sensor works flawlessly with my Arduino Uno. The analog output is stable, and the provided source code made integration incredibly fast. Great value for the price.

Anonymous

Mar 08, 2026

Rating: 4/5

Solid performance for non-corrosive liquids

Using this to monitor distilled water levels in a lab setup. It responds quickly to level changes. Just ensure you don't leave it submerged in highly corrosive chemicals for long periods.

Anonymous

Mar 07, 2026

Rating: 3/5

Works but traces oxidize over time

Functionality is great initially. After three months of constant exposure to tap water, I noticed some oxidation on the traces affecting accuracy. Good for temporary or intermittent use.

5 FAQ

Q: Does the module come with connecting wires?

A: The module typically comes with header pins soldered or unsoldered depending on the batch, but jumper wires are usually not included in the package. You will need standard Dupont wires to connect it to your microcontroller.

Q: Is the source code compatible with the ESP32?

A: Yes, the provided source code is written in standard C++ for the Arduino IDE, which fully supports the ESP32. You may just need to select the correct board manager in your IDE settings.

Q: Can this sensor detect oil levels or only water?

A: This is a conductive sensor, so it requires a liquid that can conduct electricity. It works well with water and most aqueous solutions but will not detect pure oil or other non-conductive fluids.

Q: Can I use this directly with 24V industrial PLCs?

A: No, this module operates at 3.3V to 5V logic levels. Connecting it directly to 24V will damage the sensor. You must use an optocoupler or a voltage divider circuit to interface with higher voltage systems.

Q: What is the maximum depth this sensor can measure?

A: The sensing area consists of parallel traces approximately 40mm long. It can detect levels anywhere along that 40mm span. For deeper tanks, you would need to mount multiple sensors at different heights.

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