ESP8266 Community Forum

- Thu May 21, 2015 6:14 am #18053 You connect 5V to the VCC pin (since it's a 5V coil relay).

Connect GND pin to ground on both 5V and 3.3V power supplies.

Connect ESP8266 GPIO to the middle signal pin. You do not need a level shifter since it does to the gate of the mosfet.

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