const int pirpin = 2;
const int ledpin = 13;
const int buzzerpin = 8;

void setup() {
  pinMode(pirpin, INPUT);
  pinMode(ledpin, OUTPUT);
  pinMode(buzzerpin, OUTPUT);

  Serial.begin(9600);
}

void loop() {
  int motion = digitalRead(pirpin);
  if (motion == HIGH) {
    Serial.println("Motion Detected");
    digitalWrite(ledpin, HIGH);
    tone(buzzerpin, 1500);
    delay(5000);
    digitalWrite(ledpin, LOW);
    noTone(buzzerpin);
    Serial.println("Alarm is OFF");
  }
}