Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Output Type	Analog Voltage Output
Operating Voltage	DC 3.3V to 5.5V
Detection Principle	Capacitive Sensing
Material	Corrosion-Resistant PCB Coating
Interface	3-Pin PH2.0 Connector
Compatibility	Arduino, Raspberry Pi, ESP32
Current Consumption	< 20mA at 5V
Response Time	< 1 Second
Dimensions	60mm x 20mm x 8mm
Weight	12 grams

6 reviews

Anonymous

Mar 24, 2026

Rating: 4/5

Good sensitivity

The detection range is good. It picks up moisture changes quickly. I deducted one star only because the connector cable could be a bit longer, but that's a minor issue easily fixed with an extension.

Anonymous

Mar 22, 2026

Rating: 5/5

Easy to integrate

Plug and play with standard microcontrollers. The signal is stable and doesn't fluctuate wildly like some other modules I've tested. Highly recommend for any DIY smart garden project.

Anonymous

Mar 22, 2026

Rating: 5/5

Finally, a sensor that doesn't rust!

I've gone through so many resistive sensors that corroded within weeks. This capacitive module has been in my tomato planter for three months now and still looks brand new. The analog output is smooth and easy to read with my Arduino.

Anonymous

Mar 21, 2026

Rating: 5/5

Durable and accurate

I was skeptical about capacitive sensors, but this one converted me. No electrolysis means the sensor lasts much longer. My indoor plants have never been happier thanks to the consistent data.

Anonymous

Mar 02, 2026

Rating: 4/5

Great value, needs calibration

Solid build quality and the wide voltage range is perfect for my 3.3V ESP8266 projects. Just remember that you need to calibrate the dry and wet values in your code for accurate readings, as it varies slightly by soil type.

Anonymous

Mar 01, 2026

Rating: 5/5

Perfect for automated irrigation

Using this to trigger my water pump when soil gets too dry. It's much more reliable than the cheap metal probe ones I used before. The corrosion-resistant coating really makes a difference in damp environments.

5 FAQ

Q: How deep should I insert the sensor into the soil?

A: For best results, insert the prongs fully into the soil up to the base of the PCB, ensuring good contact with the soil around the entire sensing area. Avoid touching the electronic components above the prongs.

Q: Will the coating wear off if I leave it in the soil permanently?

A: The PCB is coated with a durable, corrosion-resistant material designed for long-term soil exposure. While no coating is indestructible forever, this module significantly outlasts uncoated resistive sensors, often lasting years under normal conditions.

Q: Can this sensor be used directly with a 5V Arduino Uno?

A: Yes, this module operates on a wide voltage range of DC 3.3V to 5.5V, making it fully compatible with the 5V logic of an Arduino Uno without needing a level shifter.

Q: Does this measure temperature as well?

A: No, this module is designed specifically for detecting volumetric water content (soil moisture) via capacitive sensing. It does not have a temperature sensor onboard.

Q: Is the output digital or analog?

A: This specific model provides an Analog Voltage Output. You will need to use an ADC (Analog-to-Digital Converter) pin on your microcontroller to read the moisture level. It does not have a built-in digital comparator output.

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