Terralink Substrate Sensor

TerraLINK – Advanced Root Zone Sensor

The Growlink TerraLINK provides precise measurement of volumetric water content (VWC), electrical conductivity (EC), and temperature directly in the root zone. Built with TDR technology and True EC accuracy, TerraLINK delivers consistent data even in extreme dryback or high-EC conditions.

Designed for commercial scalability, TerraLINK integrates seamlessly into Growlink OS and Crop Steering Copilot, enabling data-driven irrigation strategies, optimized resource use, and improved yields.

Key Features

• Accurate Root Zone Monitoring: Measures VWC, EC, and temperature with precision.
• Reliable in Extreme Conditions: Consistent performance in both high EC and dryback environments.
• Crop Optimization: Supplies real-time insights to minimize water waste and maximize yields.
• Seamless Integration: Connects with Growlink OS and Crop Steering Copilot for automated irrigation strategies.
• Made in the USA: Durable and dependable design for demanding grow environments.

Why Growers Choose TerraLINK

Traditional substrate sensors often fail in high-EC or extreme dryback conditions. The TerraLINK ensures accurate, consistent measurements, empowering growers to make informed decisions and scale their crop steering with confidence.

Trusted by over 3,000 cultivators worldwide, Growlink sensors drive consistent harvests, healthier plants, and higher profitability.

Technical Highlights

• Technology: Time-Domain Reflectometry (TDR)
• VWC Range: 0–100%, accuracy ±3%
• Bulk EC Range: 0–18,000 μS/cm, resolution 1 μS/cm
• Temperature Range: -40 to +55°C, accuracy ±0.25°C
• Dimensions: 7.25″ × 2.25″ × 1.75″
• Includes: 2m M8 cable

Perfect For

• Precision irrigation and fertigation
• Crop steering strategies
• Commercial greenhouses and indoor grows
• Craft growers adopting data-driven cultivation

Upgrade your substrate monitoring with TerraLINK. Gain reliable root zone insights, automate irrigation with confidence, and ensure your next harvest is always your best.

Download TerraLINK User Manual (PDF)