A
Anonymous
Mar 28, 2026
Rating: 5/5
Solid relay
The relay click is satisfying and the connection is stable. No false positives so far.
Description
Raindrop Sensor Module Large Area Rain Detector 5V Relay Control Dry Contact Switch Water Level Detection
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | DC 5V |
| Relay Contact Rating | 10A 250VAC / 10A 30VDC |
| Output Signal | Digital Switch (TTL) |
| Switch Type | Normally Open (NO) |
| PCB Dimensions | 32mm x 15mm |
| Sensor Plate Size | 60mm x 50mm |
| Current Consumption | Approx. 40mA (Relay On) |
| Sensitivity Adjustment | Yes, via Potentiometer |
| Operating Temperature | -20°C to 70°C |
| Package Weight | 28g |
5 reviews
A
Anonymous
Mar 25, 2026
Rating: 5/5
Excellent for automation
Used this for my greenhouse roof. Triggers the motor to close shades when rain starts. Very reliable.
A
Anonymous
Mar 17, 2026
Rating: 4/5
Sensitive
Very sensitive to water. Had to adjust the pot down slightly for my application.
A
Anonymous
Mar 04, 2026
Rating: 4/5
Good value
Works well. Instructions were minimal but easy to figure out with a multimeter.
A
Anonymous
Jan 26, 2026
Rating: 5/5
Easy to use
First time using a sensor module. Connected to Arduino Uno without issues.
5 FAQ
Q: Is the NO/NC configuration changeable?
A: This module is fixed as Normally Open. For Normally Closed, you would need to wire differently or choose another model.
Q: Can I connect multiple sensors in parallel?
A: Yes, but ensure your power supply can handle the combined current draw.
Q: What happens when power is lost?
A: The relay will deactivate. It is not a latching relay.
Q: Is the sensor plate corrosion resistant?
A: It is nickel-coated. For long-term outdoor use, we recommend applying a protective layer.
Q: Can I use this with Raspberry Pi?
A: Yes, but ensure you use the 5V pin for power. GPIO pins should read the signal output.
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