Link4 is a leading supplier of greenhouse environmental control products for institutional and commercial applications. We combine proven, field-tested design solutions with the latest in control and automation technology. This includes customized control from anywhere in the world via our iPonic Cloud database. Our products include advanced greenhouse control systems, hydroponic controllers and irrigation systems, as well as supplementary products such as motor controllers, contactor panels, sensors and greenhouse accessories. We also back our products with personalized service and support. Many of our clients are new to the technical aspects of environmental control systems; so we have designed our products to be simple to install and use, and have support personnel – often the same engineers that designed our products – available to answer questions.