The wiring diagram of Relay

5 and 6 are a pair of common terminals, 1 and 2 are a pair of normally closed contacts, and 3 and 4 are a pair of normally open contacts. When 7 and 8 are not energized, 5-6 and 1-2 are connected. After energization, 1-2 will be disconnected, and 5-6 will be continuously connected to 3-4.

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