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 |
| Board Dimensions | 65mm x 20mm x 8mm |
| Comparator Chip | LM393 |
| Sensitivity | Adjustable via Potentiometer |
| Interface | 3-Pin PH2.0 Connector |
| Material | FR-4 PCB with Gold Plated Contacts |
| Compatibility | Arduino, Raspberry Pi, ESP32, STM32 |
| Application | Water Tank Monitoring, Rain Detection, Leak Alarms |
Anonymous
Mar 30, 2026
Rating: 5/5
Perfect for my aquarium project
This sensor works exactly as described. I used it to monitor the water level in my automatic plant watering system. The sensitivity adjustment is very responsive and easy to tune.
Anonymous
Mar 29, 2026
Rating: 4/5
Good value, needs calibration
Great little module for the price. You do need to spend a few minutes calibrating the potentiometer to get the trigger point just right, but once set, it is very reliable.
Anonymous
Mar 25, 2026
Rating: 5/5
Compact and effective
The size is perfect for tight spaces inside enclosures. The gold plating on the contacts seems to hold up well against constant exposure to moisture.
Anonymous
Mar 16, 2026
Rating: 5/5
Reliable and durable
I have deployed six of these in a flood detection prototype. They have been running for three months without any corrosion issues or false positives. Highly recommended.
Anonymous
Mar 14, 2026
Rating: 4/5
Works well for rain detection
Using this on my balcony to detect rain and close the windows automatically. It reacts quickly to droplets. Only wish the connecting wires were a bit longer.
Anonymous
Mar 02, 2026
Rating: 5/5
Easy to interface with Arduino
As a beginner, I found this very easy to connect. There are plenty of tutorials online, and the digital output makes coding straightforward. No complex libraries needed.
Q: What happens if the sensor is submerged completely?
A: The sensor will output a high signal continuously while submerged. It is designed to withstand immersion, but long-term exposure to saltwater may accelerate corrosion.
Q: Is this module safe to use with drinking water tanks?
A: While the electronics are low voltage and safe, the PCB materials are not specifically certified for food-grade contact. We recommend using it for industrial or general monitoring purposes.
Q: Does this come with the connecting cables?
A: Yes, the package typically includes a 3-pin Dupont cable for easy connection to microcontrollers like Arduino or Raspberry Pi.
Q: Can I connect multiple sensors to one analog pin?
A: This module provides a digital output. To use multiple sensors, you should connect each to a separate digital input pin on your microcontroller.
Q: Can this sensor measure the exact depth of the water in millimeters?
A: No, this is a digital switch sensor. It detects the presence or absence of water at a specific point rather than measuring continuous depth levels.
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