#define PIR 5
#define Buzz 6
#define LED 7

void setup() {

  pinMode(Buzz, OUTPUT);
  pinMode(LED, OUTPUT);
  pinMode(PIR, INPUT);
  Serial.begin(9600);
}

    void loop() {

  
  if(digitalRead(PIR) ==HIGH){ //if movement detected
   digitalWrite(LED, HIGH); // Turn LED ON
   tone(Buzz, 1000);// send 1KHz sound signal...
   delay(1000);
   noTone(Buzz); // Stop sound
   Serial.println("intruder Detected"); // Print this next on Serial Monitor
  }
  else
  {
    digitalWrite(LED, LOW);
    digitalWrite(Buzz, LOW);
    Serial.println("No movement detected");
  }
  }