Interfacing of the Relay with Arduino - Wokwi ESP32, STM32, Arduino Simulator

#define RELAY 7

void setup() {
  Serial.begin(9600);
  pinMode(RELAY, OUTPUT);
}

void loop() {
  digitalWrite(RELAY, HIGH);
  Serial.println("Relay ON");
  delay(1000);
  digitalWrite(RELAY, LOW);
  Serial.println("Relay OFF");
  delay(1000);
}