Automation System
Light sensors:

work in direct sunlight
never use infrared light as light source
cannot be used a s limit switches.
None of these
come in a wide variety of mounting styles

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Automation System
Ergonomics refers to:

the cost relationship of the workstation versus productivity
the human aspect of the environment around the workstation as well as the workstation itself
the level of involvement the operator has with the workstation
None of these
the technology involved in the workstation itself

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