Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switch Output (0 and 1) |
| Detection Area | 40mm x 16mm |
| Comparator Chip | LM393 |
| Sensitivity | Adjustable via Potentiometer |
| PCB Size | 63mm x 20mm x 8mm |
| Mounting Hole Diameter | 3.1mm |
| Interface | 3-Pin PH2.0 Connector |
| Application | Water Leak Detection, Liquid Level Monitoring |
| Package Includes | 1x Water Level Sensor Module |
Anonymous
Mar 27, 2026
Rating: 5/5
Perfect for my Arduino rain alarm
This sensor works exactly as described. The sensitivity adjustment is very responsive, allowing me to trigger the alarm only when a significant amount of water is present. Great value for the price.
Anonymous
Mar 24, 2026
Rating: 5/5
Exceeded expectations
Very sensitive and accurate. I tested it with different water depths and the digital output switches cleanly without bouncing. Highly recommended for automation tasks.
Anonymous
Mar 18, 2026
Rating: 5/5
Reliable leak detector
I placed this under my washing machine connected to a smart home hub. It detected a small drip immediately. Peace of mind is worth every penny.
Anonymous
Mar 15, 2026
Rating: 4/5
Solid build quality
The PCB looks professional and the traces are thick enough. The only reason for 4 stars is that the connector cable was a bit short for my specific setup, but that's an easy fix.
Anonymous
Mar 09, 2026
Rating: 5/5
Great for school projects
Bought this for a high school electronics project. It was easy to interface with our microcontroller and the documentation online helped us get it running in minutes.
Anonymous
Mar 08, 2026
Rating: 4/5
Good sensor, needs calibration
Works well for monitoring my plant watering system. You definitely need to spend time calibrating the potentiometer to get the right threshold, but once set, it is reliable.
Q: Can this be used for saltwater applications?
A: While it will detect saltwater, prolonged exposure may cause corrosion on the exposed copper traces. We recommend coating the traces with a conformal coating if used in corrosive environments.
Q: Can this sensor measure the exact depth of the water in millimeters?
A: No, this module provides a digital switch output (high/low) based on a threshold you set. It detects presence or absence of water above a certain level, not continuous depth measurement.
Q: Does the package include connecting wires?
A: The standard package includes the sensor module only. Connecting wires or jumper cables need to be purchased separately unless specified in a bundle deal.
Q: How do I adjust the sensitivity?
A: There is a blue potentiometer on the board. Use a small screwdriver to turn it clockwise to increase sensitivity or counter-clockwise to decrease it while testing with water.
Q: Is this module compatible with Raspberry Pi GPIO pins?
A: Yes, it is compatible. Since it operates at 3.3V-5V and outputs a digital signal, you can connect the DO pin directly to a Raspberry Pi GPIO input pin.
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