void setup() {
  // put your setup code here, to run once:
  pinMode(3, INPUT);
  pinMode(4, OUTPUT);
}

void loop() {
  int signal = digitalRead(3);
  if(signal == HIGH) {
  digitalWrite(4, HIGH);
  delay(5000);
  digitalWrite(4, LOW);
  } else {
  digitalWrite(4, LOW);
  }
}