Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	Resistive Rainfall Detection
Operating Voltage	3.3V - 5V DC
Output Signal	Digital Switch Output (0 and 1)
Detection Area	5cm x 4cm Nickel-Coated Lines
Sensitivity Adjustment	Adjustable via Potentiometer
Comparator Chip	LM393 Wide Voltage Comparator
PCB Size	32mm x 14mm
Mounting Hole Diameter	3.0mm
Response Time	< 1 Second
Application Compatibility	Arduino, Raspberry Pi, STM32

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Reliable and compact

The size is perfect for fitting into small junction boxes. I have tested it under a sprinkler system and it triggers instantly. Highly recommend for automation tasks.

Anonymous

Mar 28, 2026

Rating: 5/5

High sensitivity as advertised

I was skeptical about the 'high sensitivity' claim, but it detects even single drops of water effectively. Great component for triggering alerts or closing windows automatically.

Anonymous

Mar 25, 2026

Rating: 4/5

Works well but pins are tight

Functionality is top-notch. My only minor complaint is that the header pins were slightly tight when inserting jumper wires, but nothing a little care couldn't handle.

Anonymous

Mar 22, 2026

Rating: 5/5

Excellent for learning electronics

Bought this for a university project on smart irrigation. The digital output makes coding very straightforward. The build quality feels sturdy enough for prototype testing.

Anonymous

Mar 08, 2026

Rating: 5/5

Perfect for my weather station project

This sensor module works exactly as described. The sensitivity adjustment is very responsive, allowing me to calibrate it for light drizzle or heavy rain. Easy to interface with my Arduino Uno.

Anonymous

Mar 03, 2026

Rating: 4/5

Good value, needs calibration

Great little sensor for the price. It took a few minutes to get the potentiometer setting just right for my specific outdoor enclosure, but once set, it has been reliable for weeks.

5 FAQ

Q: Does this module come with connecting wires?

A: No, the module typically comes without pre-attached wires. You will need to solder your own header pins or connect jumper wires directly to the pads.

Q: Is the PCB coated for long-term outdoor use?

A: The board has a basic solder mask, but for permanent outdoor installation, we recommend applying an additional conformal coating to protect against corrosion over time.

Q: Does it work with 3.3V logic levels?

A: Yes, the LM393 comparator supports a wide voltage range, so it is fully compatible with both 5V and 3.3V microcontrollers like the ESP32 or Raspberry Pi.

Q: What is the maximum current draw?

A: The module consumes very little power, typically around 20mA when active, making it suitable for battery-powered projects.

Q: Can this sensor detect snow?

A: This sensor is designed primarily for liquid water detection. While melting snow might trigger it, dry snow usually will not conduct electricity enough to activate the sensor.

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