Soil Moisture sensor (Corrosion Resistant)

$11.50 Inc. GST

This resistive soil moisture sensor measures volumetric water content in agricultural, research, and automated gardening applications. Operating at 3.3V to 5V DC with a current draw under 20mA, the module features corrosion-resistant stainless steel forks isolated from the main controller board by a 115cm lead wire to prevent moisture damage. The control board processes probe resistance, providing selectable analogue and digital output channels for direct interface with Arduino or similar microcontroller platforms. Typical deployments include automated greenhouse control configurations, precision irrigation assemblies, field research stations, and remote telemetry networks to drive relay blocks or log multi-node data.

In stock

Description

Technical Overview

This component functions as a resistive soil moisture sensor designed to measure volumetric water content in soil or substrate matrices. Primarily, the unit monitors moisture levels by utilizing stainless steel forks that resist corrosion to maintain operational longevity. Because the manufacturer separates the sensor probe from the main controller board using a 115cm lead wire, installers can isolate the sensitive electronic circuitry from direct exposure to water or ambient environmental moisture. Furthermore, the sensor interfaces with standard microcontrollers like Arduino platforms via selectable analogue and digital output channels. Internally, the module operates within a voltage range of 3.3V to 5V DC while drawing less than 20mA of operating current. Consequently, the control board processes the electrical resistance between the probes to provide a variable output signal relative to the surrounding moisture content.

Applications

Agricultural engineers and technicians actively deploy this environmental sensor across automated agricultural monitoring networks and precision irrigation assemblies. For example, system builders frequently integrate the module into automated gardens and greenhouse control configurations to trigger irrigation cycles based on substrate dryness. Additionally, environmental scientists utilize these probes in field research stations to track soil hydration levels over extended monitoring periods. Installers also specify this component for remote telemetry arrays and automated botanical systems where separating the electronic interface from the wet substrate is necessary. Meanwhile, automation technicians implement the selectable digital outputs to drive simple relay blocks or deploy the analogue channels for granular data logging across multi-node sensing configurations.

Technical Specifications

Specification	Value
Compatibility	Arduino compatible
Operating Voltage	3.3V – 5V DC
Operating Current	<20mA
Output Current	<30mA
Interface	Analog and Digital Output (Selectable)
Operating Temperature	-25°C – 85°C
Module Dimensions	36mm x 15mm x 17mm

Maker Store Tips and Tricks

Change the sensitivity of the sensor threshold values by carefully adjusting the integrated potentiometer on the control board.
Isolate the control board in a dedicated waterproof container or enclosure to safely deploy this sensor setup outdoors.
Shield the upper soil moisture sensor body from direct sunlight exposure to prevent ultraviolet wear and prolong its operational service life.
Ensure the control circuit board remains shielded from liquid contact at all times, as only the stainless steel fork probe is waterproof.