(English: relay) relay is an electronic device that acts as a switch cut-circuits. Using electromagnetic-and to make it work, they want power, it noted, because when the power to the relay, it will cause the page to touch each other, making appliances work, and opposite as soon as the power supply, it is not. Electrical appliances, they will be stopped. The lights that we use to enter a relay, a switch from the light in the room. Therefore, as soon as they open the switch, the relay is working.
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