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Seeed Studio  |  SKU: 101990982

Seeed Studio S-Multi Soil MTEC-01B | RS485 Modbus-RTU Multi-Depth Soil Moisture, Temperature & EC Sensor | 4-Layer, IP68, Aviation Connector

€442,00
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The Seeed Studio S-Multi MTEC-01B is an industrial multi-depth soil sensor.

  • Full root-zone profile: moisture, temp and EC at four depths
  • Industrial output: Modbus over a long cable
  • Rugged and wide-range: sealed, broad EC range

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Description

The Seeed Studio S-Multi Soil MTEC-01B is a professional-grade multi-depth RS485 (Modbus-RTU) soil sensor that simultaneously measures soil moisture, temperature, and electrical conductivity (EC) at four depths — 10, 20, 30, and 40 cm — giving a true 3D view of the root zone from a single probe.

Soil EC reflects salinity, a key driver of fertility and plant health: high salinity makes it hard for plants to take up water even when moisture is high. With high precision, an IP68 corrosion-resistant housing, and a calibrate-once design for permanent burial, the MTEC-01B suits water-saving irrigation, greenhouses, and environmental research.

Core Capabilities

4-Layer Multi-Depth Profiling Sensor nodes at 10, 20, 30, and 40 cm measure moisture, temperature, and EC at each depth — a three-dimensional root-zone profile that reveals how water and salinity move through the soil column.
High-Precision 3-in-1 Sensing Soil moisture 0–70% (±3%), temperature −30 to +70 °C (±0.5 °C), and EC 0–5000 µS/cm (±10%, extensible to 20,000 µS/cm). High sensitivity with reduced salinity interference for accurate readings across soil types.
Industrial RS485 Modbus-RTU Standard RS485 (Modbus-RTU) output integrates directly with data loggers, controllers, PLCs, and SCADA. Powered by 12–24 V DC at low current (20–40 mA), with <100 ms response and a 10-second start-up.
IP68 Rugged, Calibrate-Once Burial A high-quality, corrosion-resistant plastic housing rated IP68 lets the probe stay permanently buried — calibrate once for long-term, stable, real-time readings. Includes a 10 m cable with an aviation connector.

Typical Applications

Water-Saving Irrigation: Integrate with irrigation controllers for fully automatic, depth-aware watering — irrigating to the real root-zone profile to save water and protect yield.
Greenhouses & Horticulture: Manage moisture, temperature, and salinity for crops such as blueberries, strawberries, flowers, and vegetables.
Meteorology & Environmental Monitoring: Long-term, large-area soil monitoring for hydrology, climate, and land-management programmes.
Pasture, Turf & Research: Grassland and sports-turf management, soil quick-testing, plant culture, and scientific experiments.

Technical Integration

Key points for wiring the MTEC-01B into your system:

Output & protocol: RS485 (Modbus-RTU), connecting directly to any Modbus controller, PLC, or SCADA system; <100 ms response with a 10-second start-up.
Data backhaul: Pairs with the SenseCAP Sensor Hub 4G Data Logger to forward data to the SenseCAP server or your own private server.
Power: 12–24 V DC (40 mA at 12 V / 20 mA at 24 V), typically supplied through the data logger or controller.
Cabling: Integrated 10 m cable with an aviation connector; 1505 g.
Environment: IP68 corrosion-resistant housing for permanent burial; soil-temperature range −30 to +70 °C, device operating range −10 to +55 °C.
Setup help: For wiring, Modbus register, or data-logger support, contact the shopioT technical team.

What's in the Box

1×Multi-Depth Soil Sensor (4-layer probe, integrated 10 m cable & aviation connector)

Note: a 12–24 V DC supply and a Modbus/RS485 data logger or controller (e.g. SenseCAP Sensor Hub 4G) are required for data collection and are sold separately.

Frequently Asked Questions

What does it measure, and at what depths?

Soil moisture, temperature, and electrical conductivity (EC) at four depths — 10, 20, 30, and 40 cm — for a full root-zone profile from one probe.

Why measure EC?

EC indicates soil salinity. High salinity stops plants taking up water even when moisture is high — so EC, alongside moisture and temperature, is essential for fertigation and protecting yield.

How does it connect, and how do I get the data?

It outputs RS485 (Modbus-RTU). Connect it to any Modbus controller/PLC, or pair it with the SenseCAP Sensor Hub 4G Data Logger to send data to the SenseCAP server or your private server.

What's the EC range?

0–5000 µS/cm as standard (±10%), with an extensible customisation range up to 20,000 µS/cm for saline soils.

Can it stay buried long-term?

Yes. The IP68, corrosion-resistant housing is designed for permanent insertion — calibrate once for long-term, stable, real-time monitoring.

How is it powered?

By 12–24 V DC, drawing 40 mA at 12 V or 20 mA at 24 V, typically supplied through the data logger or controller over the 10 m cable.

Certifications

RoHS

Planning a Soil-Monitoring Deployment?

Talk to our IoT specialists, or explore the sensors and controllers you'll need.

Specifications
  • Primary Communication Protocol
    Modbus RTU (RS485)
  • Configuration Method
    Modbus Commands
  • Environment Rating
    Outdoor, Industrial
  • IP Rating
    IP68
  • Operating Temperature
    -30°C to 70°C
  • Power Consumption
    12V / 40 mA, 24V / 20 mA
  • Measurement Technology
    • Dielectric Constant (soil moisture)
    • Digital Temperature Sensor
    • EC (electrical conductivity)
  • Measurement Range
    • Soil Temperature: −30°C to +70°C
    • Soil Moisture: 0% to 70%
    • Soil EC: 0 to 5,000 µs/cm (extensible to 20,000 µs/cm)
  • Measurement Accuracy
    • Temperature: ±0.5°C
    • Moisture: ±3%
    • EC: ±10%
  • Measurement Resolution
    • Temperature: 0.1°C
    • Moisture: 0.1%
    • EC: 10 µs/cm
  • Interfaces (I/O)
    RS485 (Modbus RTU), M12/F 5-pin Connector
  • Monitoring Parameters
    Soil Moisture (VWC), Soil Temperature, Soil EC (Conductivity)

Document Library

Multi-depth Soil Sensor user Manual

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