Description
Reviews
| 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 |
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.
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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