Soil Moisture Sensor with 1.3m Cable and Module
Dispatched from Aarhus, Denmark. Shipping calculated at checkout.
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Help Monitor Your Plants' Soil Moisture
This soil moisture sensor has a 1.3m lead and a corrosion-resistant probe for monitoring relative soil moisture in Arduino and other electronics projects. It helps indicate when soil conditions change, supporting plant-watering experiments.
Connect the module correctly and adjust the blue potentiometer to set the digital switching threshold. Always connect the ground correctly; incorrect wiring can damage the module. Calibrate readings for your soil and installation rather than treating them as an absolute moisture percentage.
Technical specifications
| Specification | Value |
|---|---|
| Supply voltage | 3,3 V – 12 V DC |
| Operating current | < 20 mA |
| Output current | < 30 mA |
| Interface | +, –, DO (digital output), AO (analogue output) |
| Application | Soil moisture detection |
| Principle | The probe responds to moisture; a voltage comparator checks the selected threshold. When moisture exceeds the threshold, DO goes low |
| Adjustment | Blue potentiometer for adjusting the switching threshold |
| AO output | Analogue voltage for a compatible ADC input; check the maximum output voltage first |
| Operating instructions | Follow the usage instructions below |
Instructions for use
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Connection: Connect positive and negative supply terminals correctly. Important: Always connect the negative terminal correctly to avoid damage. The [P] power indicator lights when power is applied.
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Threshold adjustment: Turn the blue potentiometer to adjust the digital switching threshold. Use the [S] indicator to find the switching point for the installed probe and desired soil condition. The potentiometer affects only [DO], not the [AO] output.
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AO output: [AO] is an analogue voltage. Before connecting it to a microcontroller ADC, verify that it stays within that ADC's input limits; add suitable voltage scaling if necessary.
What is included?
- 1x Soil Moisture Sensor Module with 1.3m Cable and Corrosion-Resistant Probe
Warranty and shipping
We do our best to test all electronics before sending them to you.
This helps us maintain quality and avoid unnecessary trouble during development. Faults can occur, but we encounter them very rarely. If there is a problem with the equipment you ordered, you can always contact us, and we will gladly help you resolve it.
We dispatch from Aarhus to Denmark and Sweden. Shipping options and prices are shown at checkout. Delivery time depends on availability, destination and shipping method; contact us before ordering if you need an item by a specific date.





