photoelectric control meaning

  "photoelectric control" in a sentence
  • [Architecture]

    A control function which is actuated by a change in incident light.


  1. specification for photoelectric control units for road lighting
  2. 2 . arbitrary fixed-length, accurate and stable step photoelectrictracking, stopping automatically when the color mark is lost, photoelectric control feeding
  3. Furthermore, before the invention of photoelectric controls, a single switch or clock could control all the lights in an entire district.
  4. A variety of upgrades and innovations were applied to the light in the early twentieth century, including an experimental photoelectric control for the fog signal installed in 1936.
  5. A variation of this technology is the'differential switching or dead-band'photoelectric control which has multiple illuminances it switches from so as not to disturb occupants as much.

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