Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	12V DC
Sensor Type	Resistive Soil Moisture Probe
Relay Capacity	10A 250VAC / 10A 30VDC
Adjustment Method	Potentiometer for Threshold Sensitivity
Indicator Lights	Power LED and Relay Status LED
Probe Material	Nickel-Plated Copper
Cable Length	Approx. 30cm (Sensor to Module)
Mounting Holes	4x 3mm Diameter
Application	Automatic Garden Irrigation & Plant Care
Package Includes	1x Control Module, 1x Soil Probe, 1x Screw Terminal Block

6 reviews

Anonymous

Mar 20, 2026

Rating: 5/5

Saved my vacation plants!

I set this up before going on a two-week trip. It activated the drip system only when needed. Came back to healthy plants. Highly recommend for anyone needing reliable auto-watering.

Anonymous

Mar 16, 2026

Rating: 5/5

Excellent build quality

The PCB looks clean and the components seem durable. I've been running it outdoors in a weatherproof box for a month with zero failures. Great purchase for the price.

Anonymous

Mar 13, 2026

Rating: 4/5

Works well after calibration

Took a few minutes to get the sensitivity right for my specific soil mix, but once set, it has been flawless. Make sure to test it in dry and wet soil before final installation.

Anonymous

Mar 07, 2026

Rating: 5/5

Robust relay switching

The relay clicks loudly but clearly, indicating a strong connection. It handles my 12V solenoid valve without any issues. The threshold dial makes calibration simple.

Anonymous

Mar 06, 2026

Rating: 5/5

Perfect for my greenhouse automation

This module works exactly as described. I connected it to a small 12V water pump, and the sensitivity adjustment is very precise. It keeps my tomato plants happy without overwatering.

Anonymous

Mar 04, 2026

Rating: 4/5

Good value, easy to wire

Very straightforward setup. The screw terminals are solid. I deducted one star because the probe cables could be a bit longer for larger pots, but overall a great little device.

5 FAQ

Q: Does this come with a power adapter?

A: No, the package includes the control module and the soil sensor probe only. You will need to provide your own 12V DC power supply separately.

Q: Can I connect multiple sensors to one module?

A: This module is designed for a single sensor input. Connecting multiple probes in parallel may give inaccurate readings due to varying resistance across different soil locations.

Q: How do I adjust the moisture threshold?

A: There is a blue potentiometer (dial) on the board. Turn it clockwise to increase sensitivity (activate in drier soil) or counter-clockwise to decrease it. Test with dry and wet soil to find your sweet spot.

Q: Can this module directly control a 24V water pump?

A: No, this specific model is designed for 12V DC input and output control. Using a 24V pump may damage the relay or the circuit. Please ensure your pump matches the 12V specification.

Q: Is the soil probe corrosion resistant?

A: The probe is nickel-plated to resist corrosion, but prolonged exposure to very acidic soil or fertilizer runoff may eventually degrade it. We recommend checking it periodically.

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