Terralink+ with TrueEC™
Substrate Sensor

Terralink+ with TrueEC™

Advanced TDR substrate sensor with TrueEC technology for the most accurate moisture and EC sensing available. Measures volumetric water content, electrical conductivity, and temperature directly in the root zone.

$299.00
SKU: GL-LINK-Terra+

Free shipping on orders over $500 USD

Made in USA TrueEC™ Growlink OS
Why Terralink+

Research-grade substrate sensing.

Without accurate root-zone data, crop steering decisions are based on guesswork. The Terralink+ with TrueEC™ delivers true dielectric EC measurement and TDR moisture readings so you can steer with confidence.

TrueEC™ Technology

True dielectric EC measurement — not capacitance-based estimates.

TDR Accuracy

Time Domain Reflectometry for research-grade moisture readings.

Triple Measurement

VWC, EC, and temperature from a single probe in the root zone.

Copilot Compatible

Drives automated crop steering decisions through Growlink Copilot.

Durable Design

Built for repeated insertion in substrate across multiple grow cycles.

M8 Connection

Standard M8 connector for canopyLINK or HUB integration.

The Growlink LINKS System

One sensor. Complete root-zone insight.

The Terralink+ connects to canopyLINK or the LINKS HUB as part of a complete LINKS ecosystem — delivering real-time substrate data to Growlink OS for automated crop steering and monitoring.

Growlink LINKS system diagram showing how Terralink+ connects into the LINKS ecosystem
Specifications

Technical details.

Measurements VWC, BEC, Pore Water EC, Temperature, Permittivity
Technology True TDR (Time Domain Reflectometry)
VWC Range 0–100%, ±5% FS accuracy, 0.1% resolution
Bulk EC Range 0–6 dS/m (6000 μS/cm), 1 μS/cm resolution
Pore Water EC 0–55 dS/m (Hilhorst model)
Permittivity Range 1–85, 0.1 resolution, ±4% FS accuracy
Temperature Range -40 to +55°C, ±0.25°C (5–35°C), ±0.5°C (full range)
Waveguide 3-element, 5 cm, 316 stainless steel
Operating Temp -30 to +55°C
Power 4.2–15V DC, <10 μA idle, 118 mA read
Interface SDI-12 V1.4
Dimensions 15 cm × 3.3 cm (without cable)
Weight 121 g (without cable)
Cable Length 5 m or 10 m (included)
Construction 316 Stainless Steel, Epoxy, ABS Plastic
Connector M8
Compatible With canopyLINK, LINKS HUB
Substrate Types Rockwool, coco, peat, soil
Terralink+ with TrueEC™ detail view
Built for

Who uses the Terralink+.

Crop Steering Operations

Facilities using data-driven irrigation strategies to maximize yield and quality.

Commercial Cannabis

Multi-room grows requiring precise substrate monitoring for consistent results.

Research & Testing

Labs and R&D teams needing research-grade VWC and EC data from the root zone.

Complete your system.

LINKS 8-Port Device HUB

LINKS 8-Port Device HUB

The central brain of your automated grow operation. Connect and power up to eight LINK devices.

$399
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canopyLINK Sensor HUB

canopyLINK Sensor HUB

Real-time canopy-level temperature and humidity monitoring with built-in PAR sensor.

$299
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Climalink Climate Sensor

Climalink Climate Sensor

Precision climate monitoring for temperature, humidity, CO2, and VPD.

From $399
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relayLINK

relayLINK

Versatile relay control for HVAC, humidifiers, dehumidifiers, and other mixed-voltage equipment.

$299
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Build your system

Not sure which LINKS you need?

Use the System Builder to configure your setup, or talk to an expert who will spec it for your rooms.

Open System Builder Talk to an Expert
Terralink+ with TrueEC™
$299.00
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