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RelayLINK – Six-Device Dry Contact Controller
The Growlink RelayLINK gives you the power to control up to six independent devices with 3.5A dry contacts. Perfect for HVAC, mixed-voltage systems, fans, pumps, and other equipment, RelayLINK brings rugged reliability and seamless automation to your cultivation environment.
With LED status lights on each relay and direct integration into Growlink OS, growers gain real-time visibility, simplified troubleshooting, and centralized control of their most critical systems.
Key Features
- 6x 3.5A Dry Contacts: Independently control up to six separate devices.
- LED Status Indicators: Front-panel lights for easy monitoring and quick troubleshooting.
- Rugged Design: Built to last in demanding agricultural environments with optional DIN rail mounting.
- Seamless Integration: Connects directly to Growlink OS for automation, alerts, and remote monitoring.
- Made in the USA: Reliable engineering for long-term performance.
Why Growers Choose RelayLINK
Managing multiple devices manually is labor-intensive and prone to error. The RelayLINK provides precise, centralized automation, reducing human error while increasing operational consistency and scalability.
Trusted by over 3,000 cultivators worldwide, Growlink technology ensures streamlined operations, healthier crops, and higher yields.
Technical Highlights
- Input Power: 9–24VDC, 1.5A
- Outputs: 6x Form A (N.O.) Dry Contact, 1A max at 24V AC/DC each
- Operating Range: 50–122°F (10–50°C), 0–75% RH (non-condensing)
- Dimensions: 7.75″ × 7.75″ × 3.75″
- Includes: Mounting kit, 10ft RJ-45 cable, screwdriver
Perfect For
- HVAC systems
- Fans and ventilation
- Irrigation pumps
- CO₂ and environmental controls
- Mixed-voltage grow equipment
Take command of your grow with RelayLINK. Automate six devices with ease, reduce manual labor, and achieve consistent results harvest after harvest.

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.
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