why switches are useful to us
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Which switch ur question isn't clear.
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A switch is an electrical device, usually electromechanical, used to control continuity between two points.
Hand switches are actuated by human touch.
Limit switches are actuated by machine motion.
Process switches are actuated by changes in some physical process (temperature, level, flow, etc.).
Hand switches are actuated by human touch.
Limit switches are actuated by machine motion.
Process switches are actuated by changes in some physical process (temperature, level, flow, etc.).
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