int IRSensor = 2;
int LED = 4;
int buzzer = 3;
void setup()
{
  Serial.begin(115200);
  Serial.println("Serial Working");
  pinMode(IRSensor, INPUT);
  pinMode(LED, OUTPUT);
  pinMode(buzzer, OUTPUT);
  Serial.begin(9600);

}

void loop() 
{
  int sensorStatus = digitalRead(IRSensor);
  if (sensorStatus == 1)
  {
  digitalWrite(LED, LOW);
    Serial.println("Motion Ended!"); 
  }
   
  else
  {
    digitalWrite(LED, HIGH);
    Serial.println("Motion Detected!");
    tone(buzzer, 250);
  delay(1000);

    noTone(buzzer);
    delay(1000);

    tone(buzzer, 200, 1000);
    delay(2000);
  }
}