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 | Large surface nickel-coated lines |
| Comparator Chip | LM393 Wide Voltage Comparator |
| Sensitivity Adjustment | Adjustable via potentiometer |
| PCB Size | 60mm x 20mm x 1.6mm |
| Indicator LED | Power and Trigger status lights |
| Mounting Holes | 4 x 3.1mm diameter holes |
| Application Scope | Rain detection, water level monitoring |
| Package Contents | 1x Sensor Module, 1x Pin Header |
Anonymous
Mar 30, 2026
Rating: 5/5
Perfect for my automated garden system
This sensor works flawlessly with my Arduino setup. The sensitivity adjustment is very precise, allowing me to ignore light mist but trigger on actual rain. Great value for the price.
Anonymous
Mar 24, 2026
Rating: 4/5
Good module, needs calibration
The build quality is solid and the large detection area is a plus. You do need to spend a few minutes calibrating the potentiometer to get the threshold right for your specific environment.
Anonymous
Mar 23, 2026
Rating: 5/5
Great for school projects
Used this for a university weather station project. It was easy to wire up and the documentation provided by the community helped a lot. Highly recommended for beginners.
Anonymous
Mar 23, 2026
Rating: 4/5
Solid performance
Works as described. The only minor issue is that the pins are not pre-soldered, so you need to add your own headers. Otherwise, it's a robust little sensor.
Anonymous
Mar 16, 2026
Rating: 5/5
Excellent sensitivity range
The ability to adjust sensitivity from very high to low is fantastic. I use one to close my skylight automatically when it starts raining. No false alarms so far.
Anonymous
Mar 03, 2026
Rating: 5/5
Reliable and fast response
I've tested this against heavy downpours and it triggers instantly. The digital output makes it easy to interface with microcontrollers without extra components.
Q: Does this come with connecting wires?
A: The package includes the sensor module and a set of male pin headers that you can solder yourself. Connecting wires are not included in the standard package.
Q: Can this sensor measure the exact amount of rainfall in millimeters?
A: No, this is a digital switch module designed to detect the presence of rain or water. It outputs a high or low signal based on whether water bridges the traces, but it does not quantify the volume of rainfall.
Q: Is this module waterproof for long-term outdoor exposure?
A: While the sensing area is designed to get wet, the electronic components on the back (like the chip and pins) are not fully waterproof. We recommend placing the module in a protective housing with the sensing plate exposed.
Q: What microcontrollers is this compatible with?
A: This module operates at 3.3V to 5V, making it compatible with most popular microcontrollers including Arduino Uno, Nano, Mega, ESP32, ESP8266, and Raspberry Pi (with proper logic level consideration).
Q: How do I adjust the sensitivity?
A: There is a blue potentiometer on the board. Turn it clockwise to increase sensitivity (trigger with less water) or counter-clockwise to decrease sensitivity. Test with small amounts of water while monitoring the output LED.
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