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Soil Moisture & Temperature Sensor

Soil Moisture, Temperature Sensor

Product Description​

Soil moisture is the water stored in the soil. Too much moisture in the soil is not only bad for the plants but also wastes water and adds extra burdens to our planet earth. Soil temperature is the warmth of the soil. Plants grow best at their preferred temperature ranges. With access to soil moisture and temperature data, we can take actions to make sure the right amount of water is irrigated at the appropriate time, and the plants are in optimal environments which are good for their growth.

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 scientific experiments, water-saving irrigation, greenhouses, outdoor farming, gardening, precision agriculture, and other professional environmental monitoring scenarios.


  • High Performance: high accuracy, reliability, and stability
  • Universal Protocol: MODBUS-RTU RS485
  • Wide range power supply: 3.6V ~ 30V
  • Industrial-grade Robustness: IP68 rated, suitable for long-term applications
  • Strong Anti-interference: made of flame-retardant epoxy resin
  • High Durability: anti-corrosion, with excellent performance for long-term use
  • User-friendly: easy to use, install and integrate
  • Safety: designed with reverse voltage protection



  • Water-saving irrigation
  • Scientific Experiments
  • Greenhouse Management
  • Horticulture and Gardening
  • Golf turf Management
  • Grassland Management
  • Smart Agriculture
  • Soil Testing
  • Other Environmental Monitoring Scenarios


General Parameters
Product ModelS-Soil MT-02A
ProtocolMODBUS-RTU RS485
Power Supply3.6 ~ 30V DC
Current Consumption

Max [email protected] DC

Operating Temperature-40℃ ~ +85℃
Storage Temperature-40℃ ~ +85℃
Response Time< 1 second
Measuring Area

A cylinder area(with the probe as the center, diameter: 7cm, height: 7cm)

Probe MaterialFood-grade stainless steel
Seal MaterialBlack flame-retardant epoxy resin
IP RatingIP68
Cable Length5 meters
InstallationAll buried or probe into the media to be measured
Device Weight270g
Soil Temperature
Range-40℃ ~ +80℃
Accuracy± 0.5 ℃
Soil Moisture

From completely dry to fully saturated

(from 0% to 100% of saturation)


±3% (0~53%)

±5% (53~100%)





Electric Wiring​



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