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Capacitive Soil Sensor - Overview

Capacitive Soil Sensor​

The Capacitive Soil Sensor monitors soil moisture through the capacitive interaction between the soil and a conductive, coated electrode. Unlike traditional resistive sensors, this sensor avoids corrosion and offers longer durability thanks to its protective PCB coating. It’s ideal for long-term soil monitoring in plant care and gardening applications.

Capacitive soil sensor
Capacitive soil sensor

Which product is this documentation for?​

Capacitive Soil Sensor

Capacitive Soil Sensor

333098

Key Features​

  • Operating Voltage: 3.3V – 5.5V
  • Output Type: Analog voltage signal (higher moisture = higher voltage)
  • Technology: Capacitive sensing
  • Durability: Corrosion-resistant design with coated PCB
  • Compatibility: Arduino, ESP32, Raspberry Pi, and other microcontrollers
  • Dimensions: 109 × 22 mm (4.3 × 0.9 inch)
  • Mounting: Two mounting holes for stable positioning

Benefits of Capacitive Sensing​

Unlike resistive soil sensors, this capacitive sensor does not expose conductive metal to the soil, which significantly increases lifespan and reliability, especially in constantly wet or acidic environments.

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Capacitive sensing avoids electrolytic corrosion, making this sensor more robust and suitable for long-term use.