Soil Moisture Sensor Module

In stock
Special Price Rs 103.00 Rs 87.29 was Rs 236.00
  • Dual output mode, analog output more accurate
  • A fixed bolt hole for easy installation
  • With power indicator (red) and digital switching output indicator (green)
  • Having LM393 comparator chip, stable.

Soil Moisture Sensor Module

This is Soil Moisture Meter, Soil Humidity Sensor, Water Sensor, Soil Hygrometer for Ardunio. With this module, you can tell when your plants need watering by how moist the soil is in your pot, garden, or yard. The two probes on the sensor act as variable resistors. Use it in a home automated watering system, hook it up to IoT, or just use it to find out when your plant needs a little love. Installing this sensor and its PCB will have you on your way to growing a green thumb!

The soil moisture sensor consists of two probes which are used to measure the volumetric content of water. The two probes allow the current to pass through the soil and then it gets the resistance value to measure the moisture value.

When there is more water, the soil will conduct more electricity which means that there will be less resistance. Therefore, the moisture level will be higher. Dry soil conducts electricity poorly, so when there will be less water, then the soil will conduct less electricity which means that there will be more resistance. Therefore, the moisture level will be lower.

Wiring Connection

  • VCC: 3.3V-5V
  • GND: GND
  • DO: Digital output interface(0 and 1)
  • AO: Analog output interface

Package Includes:

  • 1 x Soil Moisture Sensor Kit


Sensor Type  Soil Moisture Sensor
Operating Voltage (VDC 3.3 ~ 5
PCB Dimension 3cm x 1.5cm
Soil Probe Dimension 6cm x 3cm
Cable Length (CM) 20
Weight 50 grams


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How does soil moisture sensor work?

The Soil Moisture Sensor uses capacitance to measure dielectric permittivity of the surrounding medium. In soil, dielectric permittivity is a function of the water content. The sensor creates a voltage proportional to the dielectric permittivity, and therefore the water content of the soil.

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