int rl=13;
int gl=12;
int bzz=11;
int smokeA0=A5;
int sensorThres=400;


void setup(){
  pinMode(rl, OUTPUT);
  pinMode(gl, OUTPUT);
  pinMode(bzz, OUTPUT);
  pinMode(smokeA0, INPUT);
  Serial.begin(9600);
}
void loop(){
  int analogSensor=analogRead(smokeA0);
  Serial.print("pin A0 :");
  Serial.println(analogSensor);
  if(analogSensor>sensorThres){
    digitalWrite(rl, HIGH);
    digitalWrite(gl, LOW);
    tone(bzz,1000,200);
  }
  else{
    digitalWrite(rl, LOW);
    digitalWrite(gl, HIGH);
    noTone(bzz);
  }
  delay(500);
}