Terralink Sensor (M8 Connector)
Couldn't load pickup availability








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.
- True EC Technology: Provides reliable EC data unaffected by VWC changes, ideal for aggressive drybacks.
- 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.

Integration HUBs
Playing Nicely With Brands You Love
Don’t ditch your favorite products; let’s join them all together! Your Growlink controller has the ability to operate with hundreds of third-party products.
Add More LINKS
-
LINKS 8-Port Device HUB
Regular price $399.00Regular price -
canopyLINK Sensor HUB
Regular price $299.00Regular price$399.00-$100.00 Sale price $299.00 -
Climalink Climate Sensor
Regular price From $299.00Regular price -
Terralink Sensor (M8 Connector)
Regular price $299.00Regular price -
powerLINK (Coming Soon)
Regular price $99.00Regular price -
quadLINK
Regular price $299.00Regular price$399.00-$100.00 Sale price $299.00 -
valveLINK
Regular price $299.00Regular price -
digital lightLINK
Regular price $149.00Regular price -
4 channel lightLINK
Regular price $299.00Regular price -
relayLINK
Regular price $199.00Regular price -
batch tankLINK
Regular price $699.00Regular price$799.00-$100.00 Sale price $699.00 -
nutriLINK (Coming Soon)
Regular price $999.00Regular price