SeeedIndustrial Soil Moisture, Temperature, and EC Sensor
Overview
The 101990667 is an industrial-grade 3-in-1 sensor designed to measure soil moisture, temperature, and electrical conductivity (EC) simultaneously. It utilizes an RS485 interface with Modbus-RTU protocol to provide stable and accurate data over long cable runs in harsh environments. The sensor is rated for a wide operating temperature range from -40C to +85C and supports a wide input voltage range from 3.6V to 30V DC.
Why Choose This Part
This sensor combines three critical soil parameters into a single probe, reducing installation complexity and system cost. Its RS485 Modbus output allows for easy integration with industrial PLCs, RTUs, and long-range IoT gateways. The ruggedized design and wide power supply compatibility make it suitable for remote field deployments where power stability may vary.
Applications
Key Specifications
Getting Started
To interface with the sensor, connect the RS485 A and B lines to a Modbus master device, such as an RS485-to-USB adapter or an industrial gateway. Use a DC power source between 3.6V and 30V and query the device using standard Modbus-RTU read commands for the respective registers. Ensure the stainless steel probes are fully inserted into the soil medium for accurate volumetric water content and EC readings.
