Growlink 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.

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.

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.

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

Brand	Growlink
Part Number	GL-LINK-Terra+
Length
Width
Height
Product Weight	1.13 lb
Actual Product Weight