A
Anonymous
Apr 01, 2026
Rating: 3/5
Corrosion concerns
Works well initially but noticed some oxidation after months of outdoor exposure.
Description
Rain Drop Controller Module - Leaf Humidity Sensor with Water Detection Switch
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V to 5V DC |
| Output Type | Digital Switching (TTL) |
| Comparator Chip | LM393 Wide Voltage |
| PCB Dimensions | 32mm x 14mm x 5mm |
| Sensing Surface | Gold Nickel Coated Traces |
| Sensitivity Control | Adjustable Potentiometer |
| LED Indicators | Power and Trigger Status |
| Mounting Holes | 3mm Diameter (2 Holes) |
| Operating Temperature | -10°C to 70°C |
| Interface Connector | 3-Pin PH2.0 Pitch |
5 reviews
A
Anonymous
Mar 19, 2026
Rating: 5/5
Fast response
Very quick reaction time when water bridges the contacts. Happy with purchase.
A
Anonymous
Mar 07, 2026
Rating: 5/5
Reliable switch
Using this to close my windows automatically. Has not failed me yet.
A
Anonymous
Feb 15, 2026
Rating: 4/5
Good value
Sensitive enough for rain detection. Had to adjust the potentiometer slightly.
A
Anonymous
Jan 18, 2026
Rating: 5/5
Perfect for automation
Works great with my Arduino setup. Triggers reliably when water hits the sensor.
5 FAQ
Q: How much current does it draw?
A: Standby current is low, typically under 20mA when active.
Q: What microcontroller works best?
A: It is compatible with Arduino, ESP8266, ESP32, and Raspberry Pi GPIO.
Q: Can this be left in the rain permanently?
A: The board is not waterproof. Only the sensor traces should be exposed, ideally protected.
Q: Is this compatible with 3.3V logic?
A: Yes, the module operates comfortably between 3.3V and 5V DC.
Q: Does it provide analog output?
A: This version focuses on digital switching, but some variants offer analog voltage readings.
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