Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Signal	Digital Switch Output (0 and 1)
Detection Area	40mm x 16mm
PCB Size	65mm x 20mm x 8mm
Comparator Chip	LM393
Sensitivity	Adjustable via Potentiometer
Interface Type	3-Pin PH2.0 Connector
Material	FR-4 Double-sided PCB with Gold Plating
Application Range	Water tanks, rain detection, liquid level monitoring
Package Contents	1x Water Level Sensor Module

6 reviews

Anonymous

Mar 24, 2026

Rating: 3/5

Works well but needs calibration

The sensor works, but you definitely need to spend time calibrating the potentiometer to get the right threshold. Once set, it stays consistent.

Anonymous

Mar 12, 2026

Rating: 5/5

Compact and effective

Small footprint makes it easy to fit into tight enclosures. The gold plating on the contacts seems to resist corrosion well so far.

Anonymous

Mar 11, 2026

Rating: 4/5

Good quality, easy to integrate

Used this for a simple irrigation system monitor. It connects easily to my ESP32. Only giving 4 stars because the soldering points are a bit small for thick wires.

Anonymous

Mar 10, 2026

Rating: 5/5

Reliable and stable

I have three of these running in my basement for leak detection. They have been running for months without false positives. Highly recommended.

Anonymous

Mar 09, 2026

Rating: 5/5

Great for school projects

Bought this for a university electronics project. The documentation online is plentiful, and the module itself is robust. Detected water levels instantly.

Anonymous

Mar 03, 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 fine-tune when the alarm triggers. Great value for the price.

5 FAQ

Q: Can I connect this directly to a Raspberry Pi GPIO?

A: Yes, provided you power the module with 3.3V. If you power it with 5V, the digital output might be 5V, which could damage the Pi. Use a logic level shifter if powering at 5V.

Q: Is the cable included in the package?

A: No, the package includes only the sensor module. You will need to solder your own wires or purchase a compatible PH2.0 cable separately.

Q: What is the maximum current this module draws?

A: The module typically draws about 20mA when active. The power LED and the comparator chip account for most of this consumption.

Q: Can this sensor be used with saltwater?

A: While it can detect saltwater, prolonged exposure may cause corrosion on the contacts due to electrolysis. We recommend rinsing with fresh water after use or using a non-contact ultrasonic sensor for permanent saltwater applications.

Q: Does this module provide an analog output for varying water levels?

A: No, this specific module provides a digital output (High/Low) based on a threshold you set. If you need varying levels, please look for our analog water depth sensor models.

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