Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Type	Digital Switch Output (0 and 1)
Analog Output	Yes, for rainfall intensity detection
PCB Size	16mm x 40mm
Comparator Chip	LM393
Sensitivity	Adjustable via potentiometer
Indicator LED	Power and Digital Switch Output
Connector Type	3-Pin PH2.0 or Dupont Header
Application	Arduino, Raspberry Pi, ESP8266
Material	FR-4 PCB with Nickel Plating

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Great for learning electronics

Bought this for a university project on IoT weather monitoring. It was very easy to code for using standard libraries. The response time is quick, and the build quality seems solid for the price point.

Anonymous

Mar 28, 2026

Rating: 4/5

Good value, easy to integrate

Works well for detecting rain to close my automated greenhouse windows. The analog output gives a good range of values depending on how much water is on the sensor. Only downside is the pins are a bit thin, so handle with care.

Anonymous

Mar 23, 2026

Rating: 4/5

Does the job well

Using this to trigger an alert on my phone when it starts raining. The module is small and fits easily into my waterproof enclosure. Just remember you need a microcontroller to read the data; it doesn't work standalone.

Anonymous

Mar 23, 2026

Rating: 5/5

Reliable and consistent

We bought ten of these for our workshop. All of them functioned perfectly out of the box. They are robust enough for student projects and provide clear high/low signals when wet or dry.

Anonymous

Mar 07, 2026

Rating: 5/5

Lightweight and effective

Integrated this into a custom drone landing pad detector. It's light enough not to affect flight dynamics and detects moisture immediately. Highly recommended for DIY robotics applications.

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect for my weather station project

This sensor works exactly as described. I connected it to my Arduino Uno, and the digital output triggers instantly when water touches the board. The adjustable sensitivity pot is a nice touch for filtering out false alarms from humidity.

5 FAQ

Q: Can this module be used directly with a 5V relay without a microcontroller?

A: While the module outputs a digital signal compatible with 5V logic, it is recommended to use a microcontroller (like Arduino) or a transistor circuit to drive a relay safely, as the current output from the sensor pin is limited.

Q: Does this come with connecting wires?

A: The module typically comes with header pins soldered or unsoldered depending on the option selected, but connecting jumper wires are usually not included in the package. Please check your specific order details.

Q: What is the lifespan of the nickel plating on the sensing traces?

A: The nickel-plated traces are designed for durability, but prolonged exposure to corrosive elements or constant submersion may degrade performance over time. For best results, use it for intermittent rain detection rather than continuous water level monitoring.

Q: Can I use this with a Raspberry Pi GPIO?

A: Yes, you can connect the digital output to a Raspberry Pi GPIO pin. Ensure you connect the VCC to the 3.3V or 5V pin (depending on your Pi model and configuration) and the GND to ground. The logic levels are generally compatible.

Q: Is the sensor sensitive enough to detect light mist or just heavy rain?

A: The sensitivity is adjustable via the blue potentiometer on the board. You can tune it to detect light mist or set it to only trigger during heavier rainfall, depending on your specific project needs.

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