<p>To understand when to apply the requirements of Article 725 for remote-control and signaling circuits, you need to understand the Scope of this article. Listen to this podcast and discover what distinguishes “Class 1” from “Class 2” and “Class 3” circuits and what this article applies to.</p>

To understand when to apply the requirements of Article 725 for remote-control and signaling circuits, you need to understand the Scope of this article. Listen to this podcast and discover what distinguishes “Class 1” from “Class 2” and “Class 3” circuits and what this article applies to.

Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits, Scope [725.

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Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits, Scope [725.

Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits, Scope [725.

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