Telos Growcast ControllerTelos Growcast is a universal lighting controller that helps growers to save energy and grow better plants. Growcast is compatible with many existing grow lights from major manufacturers. Wirelessly connect to Growcast and control the precise PPF output (dimming) of your grow light. Say goodbye to mechanical timers by applying on off timing schedules with an optional sunrise and sunset feature. Growcast doesnt need an internet connection to work and