#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#define BLYNK_TEMPLATE_ID           "TMPxxxxxx"
#define BLYNK_TEMPLATE_NAME         "Device"
#define BLYNK_AUTH_TOKEN            "YourAuthToken"

char ssid[] = "YourNetworkName";
char pass[] = "YourPassword";

int fanRelay = 0;

void setup() {
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  pinMode(fanRelay, OUTPUT);
  digitalWrite(fanRelay, HIGH);
}

void loop() {
  Blynk.run();
}