#define RELAY_PIN 27
#define LED_PIN 18
void setup() {
  pinMode(RELAY_PIN, OUTPUT);
}

void loop() {
  digitalWrite(RELAY_PIN, HIGH);
  Serial.println("Relay ON | LED ON");
  delay(2000);
  digitalWrite(RELAY_PIN,LOW);
  digitalWrite(LED_PIN,LOW);
  Serial.println("Relay OFF | LED OFF");
  delay(2000);
}