Description
Reviews
| 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 |
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.
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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