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, variable resistance based on wetness |
| PCB Size | 60mm x 20mm x 8mm |
| Comparator Chip | LM393 |
| Sensitivity | Adjustable via potentiometer |
| Indicator LED | Power and Trigger status LEDs included |
| Mounting Holes | 4 x 3mm diameter holes for fixed installation |
| Connector Type | 3-pin PH2.0 header (VCC, GND, DO/AO) |
| Application Range | Weather stations, automatic wipers, irrigation systems |
Anonymous
Mar 29, 2026
Rating: 5/5
Robust and simple
I've used these in three different projects now. The nickel-coated lines seem durable against oxidation. Great little module for the price point.
Anonymous
Mar 28, 2026
Rating: 4/5
Good value, needs calibration
Works well for detecting water levels in my planters. You do need to spend a few minutes tweaking the potentiometer to get the threshold right for your specific use case, but once set, it's reliable.
Anonymous
Mar 19, 2026
Rating: 5/5
Reliable detection
No false alarms so far. I tested it with a spray bottle and natural rain; both triggered the digital output consistently. Highly recommend for DIY weather projects.
Anonymous
Mar 14, 2026
Rating: 5/5
Great for learning electronics
Bought this for a university project on smart agriculture. The analog output provides nice granular data for graphing rainfall intensity. Documentation online is plentiful too.
Anonymous
Mar 05, 2026
Rating: 5/5
Perfect for my Arduino weather station
This sensor works exactly as described. The sensitivity adjustment is very responsive, allowing me to trigger my roof cover mechanism only when heavy rain starts. Easy to wire up.
Anonymous
Mar 04, 2026
Rating: 4/5
Does the job
Using it to close my skylight automatically. It reacts quickly to water droplets. Only minor issue is the screw terminals are a bit small for thick wires, but jumper wires work fine.
Q: Can this module be used directly with a Raspberry Pi GPIO?
A: Yes, but ensure you configure the GPIO pin correctly. Since the module operates at 3.3V-5V, it is generally compatible, but using a logic level converter is recommended if your Pi is strictly 3.3V and the module is powered at 5V to be safe.
Q: Can I use this to measure the exact depth of water?
A: This module is designed for presence detection or relative intensity via the analog output. It is not calibrated for precise millimeter-level depth measurement. For exact depth, an ultrasonic or pressure sensor would be more appropriate.
Q: Does this come with connecting wires?
A: The module typically comes with the board only. You will need to purchase Dupont jumper wires separately to connect it to your microcontroller.
Q: What is the maximum current draw of this sensor?
A: The typical operating current is around 20mA when the LED indicators are on. The sensing lines themselves draw negligible current.
Q: Is the PCB coated to prevent rust over time?
A: The exposed copper traces are nickel-plated to improve conductivity and provide some resistance to oxidation, but prolonged exposure to harsh elements may eventually degrade performance. We recommend housing the electronics part while leaving only the sensing area exposed.
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