Automation System
Ergonomics refers to:

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

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Automation System
Light sensors:

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

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