Industrial Soil Moisture & Temp Sensor - Analog Voltage (S-Soil MT-02A)

Industrial Soil Moisture & Temp Sensor - Analog Voltage (S-Soil MT-02A)

R 2,335.87



Soil electrical conductivity (EC) is the level of salts in soil (salinity). These parameters are vital indicators of soil fertility and health and ultimately affect the plants. When there is a high soil salinity, the salt will make it difficult for the plants to consume water even though there is a high moisture level in the soil. This situation will ultimately "burn" the plants. Plants grow best in their preferred environment, within the optimal ranges of soil moisture, temperature, and EC level. Growers need to have data on these parameters and understand what actions need to take to ensure plant health and higher yield.

This Soil Moisture & Temperature & EC Sensor MODBUS-RTU RS485 is designed with industry standards, featuring high precision, high sensitivity, and durability. Incorporating three sensors (soil moisture sensor, soil temperature sensor, and soil electrical conductivity) into one, and it comes with auto temperature compensation, this sensor ensures the accuracy of measurements regardless of the environmental changes.

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.

The stainless steel probe can be permanently inserted into the soil with quick testing for long-term use. This soil sensor is IP68 rated, very robust and durable, and suitable to be applied for long-term monitoring of soil moisture, temperature, and electrical conductivity at scientific experiments, water-saving irrigation, gardening, greenhouses, outdoor farming, horticulture, golf turf management, forestry, precision agriculture, and other professional environmental monitoring scenarios. This sensor can also be used to measure EC levels in the water, nutrient solution, and other substrates.

Highlighted Features

  • High Performance: high accuracy, reliability, and stability
  • Universal Protocol: MODBUS-RTU RS485 and 0~2V Analog Voltage
  • Compact Design: 3-in-1, soil moisture, temperature, and EC sensor
  • Wide-range Power Supply: Can be powered with supply voltage within 3.6V ~ 30V
  • Strong Robustness: Suitable to be immersed in soil, water, nutrient solution, and other substrates for a long time, anti-corrosion, automatic temperature compensation
  • Strong Anti-interference: made of flame-retardant epoxy resin


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


General Parameters
Product Model S-Temp&VWC&EC-02A
Interface RS-485
Protocol MODBUS-RTU RS485
Power Supply 3.6 ~ 30V DC
Current Consumption

6mA@24V DC

(quiescent dissipation)

Operating Temperature -40℃ ~ +85℃
Probe Material Anti-corrosion special electrode
Sealing Material Black flame-retardant epoxy resin
IP Rating IP68
Cable Length 5 meters
Installation All buried or probe into the media to be measured
Device Weight 210g
Soil Temperature
Range -40℃ ~ +80℃
Accuracy ± 0.5 ℃
Resolution 0.1℃
Soil Moisture

From completely dry to fully saturated

(from 0% to 100% of saturation)


±2% (0~50%)

±3% (50~100%)


0.03% (0~50%)

1% (50~100%)

Electrical Conductivity
Range 0 ~ 10000 μs/cm
Accuracy ± 3%
Resolution 10 μs/cm
Temperature Compensation

Built-in temperature compensation sensor,

Range: 0-50°C

Hardware Overview

Figure 1: Wiring Diagram

Figure 2: Dimensions


Data Sheet

User Manual