
RS485 Soil Moisture & Temperature Sensor (S-Soil MT-02A)
Features
High reliability and stability
Universal protocols: MODBUS RS-485
Wide range power supply: 3.6V ~ 30V
IP68 rated, suitable for long-term applications
Strong Anti-interference: made of ame-retardant epoxy resin
Anti-corrosion, with excellent performance for long-term use
Easy to use, integrate and install
Designed with reverse voltage protection
Applications
Agriculture irrigation
Green house
Grass farm
Environment monitoring
Water conservation
Soil testing
Other Sensor Applications
Introduction
This Soil Moisture & Temperature Sensor MODBUS-RTU RS485 (S-Soil MT-02A) is designed with industry standards. It
incorporates two sensors (soil moistures sensor and soil temperature sensor) into one, featuring high precision and high
sensitivity. By measuring the dielectric constant of the soil, it can stably measure the soil VWC (volumetric water content)
regardless of various soil types. The measurement conforms to current international standards for soil moisture measurement.
This soil sensor is IP68 rated, very robust and durable, suitable to be applied at long-term monitoring of soil moisture and temperature
at scientic experiments, water-saving irrigation, greenhouses, outdoor farming, gardening, precision agriculture, and other professional
environmental monitoring scenarios.
Specications
General Parameters
Product Model S-Soil MT-02A
Interface RS-485
Protocol MODBUS-RTU RS485
Power Supply 3.6 ~ 30V DC
Current Consumption Max 40mA@24V DC
Operating Temperature -40 ℃ to +85
Storage Temperature -40 ℃ to +85
Response Time Less than 1 second
Measuring Area
The material of the probe Food grade stainless steel
Sealing Material
IP Rating IP68
Cable Length 5 meters
Installation
Device Weight 270g
A cylinder area (with the probe as
the center, diameter: 7cm, height:
7cm)
The black ame retardant epoxy
resin
All buried or probe into all of the
measured medium
℃
℃
Soil Temperature
Range -40 ℃ to +80
Accuracy ±0.5
Resolution 0.1
Soil Moisture
Range From completely dry to fully saturated
Accuracy ±3% (0~53%)
Resolution 1 %
℃
℃
(from 0% to 100% of saturation)
±5% (53~100%)
℃
Wiring Diagram
Refer to the user manual for more details.

RS485 Soil Moisture & Temperature Sensor (S-Soil MT-02)
Probe Dimensions
Website: www.seeedstudio.com
Email: iot@seeed.cc
Phone: +86 755 3653 4305
Address:F9, Building G3, TCL International E City, Zhongshanyuan Road, Nanshan District, Shenzhen, China.
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