The Ecotech Radion ReefLink is a wireless communication device designed to connect Ecotech Marine's Radion LED lighting systems to the internet. It allows users to control and monitor their Radion fixtures remotely through Ecotech's cloud-based platform, making it convenient to adjust lighting settings and create customized schedules from anywhere. With the ReefLink, users can easily stay connected to their aquarium and ensure their reef environment receives the optimal lighting conditions for coral growth and health.