Relay module

Relay module is an electrically operated switch of mains voltage. It means that it can be turned on or off, letting the current go through or not. Many relays use an electromagnet to mechanically operate the switch and provide electrical isolation between two circuits.


  • 5V 1-Channel Relay interface board
  • Relay: SRD-05VDC-SL-C (AC 250V 10A, DC 30V 10A NO/NC)

Electrical connection

Connected to port GPIO5

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