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Input Sensors – Your eyes, fingers and…more?

Input Sensors – Your eyes, fingers and…more?

No need to "eyeball" it any more. Input sensors take the place of our human senses… and do a great job of it, to boot.

There are several types of input sensors. One of the first I encountered was the photo electric sensor or photo eye. These eyes controlled remote relays with a set of integrated mechanical contacts. Located inside the sensor body, the contacts changed state with a tiny magnetic relay.

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