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DC stands for Direct Current, which means the flow of electric charge in a single direction. Examples of a DC source are batteries, solar panels, dynamos.

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Yes, as long as you respect the ratings of the relays you use. You'll need to make sure that you find a relay with a 5VDC coil voltage, and a high enough rating for the contact voltage and current. F …
answered Aug 28 '18 by Andrey Akhmetov