Growers Choose Link4
We design and build smart control systems to help you grow healthier crops and plants.
Our Advantage
Every Link4 system is built with the same purpose – to make growing smarter, simpler, and more scalable.
Customer Support
US-based experts who know your system and solve issues fast.
OEM Services
Partner with Link4 to deliver proven tech under your own brand.
Electrical Installation
Licensed in California for professional, code-compliant electrical installations.
Meet The PEARL Series
Simple. Smart. Scalable.
The Pearl line gives growers dependable environmental automation without complexity or high cost. Designed for precision and ease of use, it is the ideal solution for mid-sized operations.
Accurate control of temperature, humidity, lighting, and CO₂
Cloud access for remote monitoring and instant alerts
Clean, intuitive interface for quick learning and fast installs
Modular expansion options to match your growth
Take Control from Anywhere with Link4 Cloud
Link4 Cloud gives growers complete control of their environment from any device, anywhere in the world. Unlike other systems that require extra licenses or have clunky apps, Link4 Cloud is built for real-time use in real operations.
Link4 Fixes Problems Growers Face.
Managing a growing environment isn’t just about turning fans on and off. You need precision and systems that work every day, not just in the showroom.
Legacy Brand Competitors:
❌ Proprietary Lock-In
Legacy controller brands can trap you by requiring proprietary sensors and features you’ll never use.
❌ Overcomplicated and Underpowered
Other controller brands require complicated wiring schemes and difficult setup, and even then, might be underpowered for your equipment.
❌ Impossible to Customize
Legacy brands often rely on fixed-size systems that are too much for your needs and don’t grow with you or your budget.
❌ Support That Disappears After Sale
There’s nothing worse than making an expensive decision only to lose all support after the sale, especially with complex systems like environmental control.
The Link4 Difference:
✅ Real Engineering Support
You’re not just buying hardware. You’re getting a team that designs and supports your system from day one.
✅ Custom-Fit Systems
Every facility is different. Our controllers are modular and built to your exact needs, whether you’re operating a hobby greenhouse or a full-scale CEA facility.
✅ Reliable and Scalable Technology
Our systems are trusted by growers because they are built to work in real-world conditions. As your operation grows, your control system scales with you.
Ready for a Quote?
Let us spec the right system for your facility. Fast, expert guidance with no pressure.