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Home / Computer Hardware, Monitors & Peripherals / Soil Moisture Sensor Module 5V Capacitive Detection 12V Sensor Relay Automatic Watering DIY Kit

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Input Voltage 5V DC / 12V DC
Output Signal Digital Switch Output (0 and 1)
Detection Method Capacitive Sensing
Relay Rating AC 250V 10A / DC 30V 10A
Operating Temperature -10°C to 50°C
Probe Material Corrosion Resistant Alloy
Sensor Cable Length Approx. 30 cm
Module Weight 45 grams
LED Indicators Power and Status LEDs
Package Contents 1x Sensor Module, 1x Probe, 1x Relay Board

5 reviews

A

Anonymous

Mar 13, 2026

Rating: 4/5

Good value kit

Easy to configure the sensitivity potentiometer. Relay clicks loudly but functions well for my small pump.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Reliable detection

No false positives so far. The corrosion resistant probe is a huge plus for long term soil contact.

A

Anonymous

Mar 02, 2026

Rating: 5/5

Perfect for automation

Works flawlessly with my Arduino setup. The capacitive sensor is much more durable than resistive ones.

A

Anonymous

Feb 20, 2026

Rating: 5/5

Saves my plants

I use this for my indoor garden. It waters only when needed. Very happy with the purchase.

A

Anonymous

Jan 27, 2026

Rating: 4/5

Solid component

Instructions could be more detailed, but there are plenty of tutorials online. Works as expected.

5 FAQ

Q: What is the maximum water pump size supported?

A: The relay supports up to 10A. Please check your pump's current draw to ensure it stays within this limit.

Q: Is the probe completely waterproof?

A: The probe is designed for soil insertion and water exposure, but the connector junction should be kept dry.

Q: How do I calibrate the sensitivity?

A: Use the small potentiometer on the board. Turn it while the probe is in dry soil until the LED switches state.

Q: Does this come with a power adapter?

A: No, the kit includes the sensor and relay module only. You will need to supply your own power source.

Q: Can this module operate on 3.3V logic?

A: The module power input requires 5V or 12V, but the signal output is compatible with 3.3V microcontrollers.

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