Technology Sourcebook
www.foodengineeringmag.com/articles/96265-rite-hite-led-virtual-vision-communication-system

Rite-Hite LED Virtual Vision communication system
October 19, 2016
Used as an alternative or complement to high-speed doors that use clear plastic vision panels, the Rite-Hite LED Virtual Vision communication system has a motion sensor on each side of the door. When the sensors detect an object approaching, a strip of red LEDs begins flashing on the opposite side of the door.
Rite-Hite Corporation; 800-456-0600; www.ritehite.com