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The is in refrence to a NPN Prox Switch. These types of electrical sensors are widely used in various types of Manufacturing Facilities. Many of these types of manufactures are well known to the manufacturing community such as diect automation, rockwell automation, keyennce and omron to name a few.

NPN prox switches are known for there Neutral to positive sensing characteristics, thus having the output back to the controller a neutral based signal.

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12y ago

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