const int RELAY_ENABLE = 7;     




void setup() {
 
  pinMode(RELAY_ENABLE, OUTPUT);
  Serial.begin(9600);
  Serial.println(F("DPDT example!"));

}

void loop() {
  Serial.println("RELAY BEGIN!");

  digitalWrite(RELAY_ENABLE, LOW);
  delay(1000);

  Serial.println("RELAY OFF!");
  digitalWrite(RELAY_ENABLE, HIGH);
  delay(1000);
  }