Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Type	Digital (DO) and Analog (AO)
Detection Area	Approx. 40mm x 16mm
Indicator LED	Power and Threshold Status
Adjustable Sensitivity	Yes, via Potentiometer
Compatible Platforms	Arduino, Raspberry Pi, ESP32
Probe Material	Nickel-plated Steel
Cable Length	20 cm Flexible Wire
Application	Smart Agriculture, DIY Robotics
Package Includes	1x Sensor Module, 1x Probe, Jumper Wires

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Sensitive and reliable

The potentiometer makes it super easy to adjust sensitivity without changing code. Highly recommend for anyone starting with IoT gardening.

Anonymous

Mar 18, 2026

Rating: 4/5

Great value for learning projects

Bought this for a university smart car project. It detects soil moisture changes quickly. The only downside is the wires are a bit short for larger setups.

Anonymous

Mar 12, 2026

Rating: 5/5

Easy to integrate

Plug and play with standard microcontrollers. The digital output is great for simple on/off logic if you don't need granular data.

Anonymous

Mar 08, 2026

Rating: 5/5

Saved my indoor plants

Integrated this into a custom watering rig. It accurately tells the difference between damp and dry soil, preventing over-watering.

Anonymous

Mar 05, 2026

Rating: 4/5

Solid build quality

The nickel plating on the probes seems durable against corrosion. Readings are stable, though you need to account for soil type variations.

Anonymous

Mar 01, 2026

Rating: 5/5

Perfect for my automated plant system

This sensor works flawlessly with my Arduino setup. The analog output gives very consistent readings, making it easy to calibrate the watering pump threshold.

5 FAQ

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

A: For best results, insert the probe about 2-3 inches deep, ensuring both prongs are fully covered by soil but not touching the bottom of the pot.

Q: What is the lifespan of the metal probes?

A: With proper care and removal from highly acidic soils when not in use, the nickel-plated probes typically last 1-2 years before significant corrosion affects accuracy.

Q: Does this come with sample code for Arduino?

A: We provide a link in the package documentation to our GitHub repository containing example sketches for both analog and digital reading modes.

Q: Is the module waterproof?

A: The probe is water-resistant, but the PCB circuit board is not waterproof. Please keep the electronic components dry and above the soil line.

Q: Can this sensor be used directly with a 5V Raspberry Pi GPIO?

A: Yes, but please ensure you use the digital output pin with a pull-up resistor configuration or level shifter if reading analog values to protect the Pi's 3.3V logic.

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