int servoPin=9;
int pirPin=2;
int ledPin=3;
int buzzerPin=4;
int state=0;
void setup() {
  pinMode(pirPin, INPUT);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  Serial.begin(9600);
}
void loop() {
  state=digitalRead(pirPin);
  if (state==HIGH)
  {
    tone(buzzerPin,2000);
    delay(5000);
    noTone(buzzerPin);
    {
      digitalWrite(3,HIGH);
      delay(1000);
    }
  }
  else
  noTone(buzzerPin);
    {
      digitalWrite(ledPin,LOW);
    }
}