photoelectric door opener
photoelectric door opener
[¦fōd·ō·i′lek·trik ′dȯr ‚ōp·ə·nər] (control systems)
A control system that employs a photocell or other photo device, used to open and close a power-operated door.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.