A
Anonymous
Apr 05, 2026
Rating: 4/5
Easy to use
Straightforward wiring. Sensitivity adjustment took some trial and error but works well now.
Description
Rain Drop Detection Module - Large-Area Rain Sensor with Dry-Contact Switch, 5V Relay Control for Water Level Detection
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 5V DC |
| Output Type | Digital Switch (DO) |
| Comparator IC | LM393 |
| Sensor Pad Dimensions | 60mm x 20mm |
| Module PCB Size | 32mm x 14mm |
| Relay Load Capacity | 10A 250VAC / 10A 30VDC |
| Sensitivity Control | Adjustable Potentiometer |
| LED Indicators | Power and Trigger Status |
| Mounting Hole Size | 3mm |
| Interface Type | 3-Pin PH2.0 Connector |
5 reviews
A
Anonymous
Mar 31, 2026
Rating: 4/5
Good value module
Works as advertised. Would prefer a longer cable for the sensor pad but easily extendable.
A
Anonymous
Mar 26, 2026
Rating: 5/5
Perfect for weather station
Integrated this into my backyard weather station. The relay triggers reliably when rain hits the sensor.
A
Anonymous
Mar 25, 2026
Rating: 5/5
Great sensor area
The large area pad detects drops much faster than the smaller modules I used previously.
A
Anonymous
Feb 26, 2026
Rating: 5/5
Reliable relay output
The relay click is audible which is good for confirmation. Handles my 12V solenoid valve without issues.
5 FAQ
Q: What connector type is used?
A: It uses a standard 3-pin PH2.0 interface compatible with most microcontroller kits.
Q: Does the relay stay closed when wet?
A: Yes, the output switches state when water bridges the sensor pads and resets when dry.
Q: Can I power this with 3.3V?
A: This module is designed for 5V. Using 3.3V may result in unstable relay operation.
Q: Can I connect multiple sensors?
A: You can daisy-chain power, but each module needs its own digital input pin for detection.
Q: Is the sensor pad waterproof long-term?
A: The pad is coated but prolonged exposure to elements may cause corrosion. We recommend protective housing.
![[10% Off for 2 Items] Double-Sided Wool Felt Mat for Calligraphy and Painting, Student Practice Sheet, Brush Writing Desk Pad, Four Treasures of the Study Set](https://www.gosteppe.com/cache/small/product/270298/legacy-main-71bd30ba8d3367be61265f91.webp)
