Using MFRC522 RFID Module In Arduino to Control 5v Single Channel Relay

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Here i have used a RFID Module with Arduino UNO powered by a 9V battery Pack to Control a Relay Switch.

This Relay Switch can be used to control any and all equipments ranging from DC to AC 220V

Also more relays can be added with other Digital Out Ports in the Arduino for Various or same Access Cards.

Please Note : The UID of the Access card should be changed in the coding as it varies from Card to Card.

The RFID Master Library :

Arduino Code :…/rfid-relay-rfid-door-lock-code-…
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