About Us

Link4 Corporation has over 40 years of experience in the design and manufacture of environmental controllers for the commercial greenhouse industry. In 2011, Link4 developed the iPonic Series of grow room controllers for the professional indoor growing market.

Today, the iPonic Series of grow room controllers remain the only Made in USA products that combine commercial grade grow room control, with platform independent mobile control and alarms, across all mobile devices. Listen to what our customers are saying:


State University of New York


"Link4 provides exceptional control for our research and educational facilities."

  -Contact at SUNY

"We recommend Link4 controllers to all our professional growers."

  -Contact at Growers House

Growers House

Growers House