"In-store display board" simulates how Harvest-Master responds to changing outside climate. Fit a controller to the display board (see ghost image), and bright green LEDs show which devices (fans, lights, etc) are enabled while bright red LEDs show when those devices are turned ON by Harvest-Master. The most advanced display available anywhere is also invaluable to set up your customers' controller, ready to:
Take home, Plug in, Run, Harvest. Not for resale.