int fs=13;
int buzzer=12; 
int led=11;
void setup() {
  // put your setup code here, to run once:
  pinMode(fs, INPUT);
  pinMode(buzzer, OUTPUT);
  pinMode(led, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int n=digitalRead(fs);
  Serial.println(n);
  delay(500);
  if(n==1)
  {
    digitalWrite(buzzer,0);
    digitalWrite(led,0);
    Serial.println("FIRE IS NOT DETECTED");
  }
  else
  {
    digitalWrite(buzzer,1);
    tone(12,262,250);
    digitalWrite(led,1);
    Serial.println("FIRE IS DETECTED");
  }
}