#define PIR 5
#define LED 7
#define BUZZER 6

int val = 0; // initialize the value as zero at the beginning 

void setup() {
  // put your setup code here, to run once:
  pinMode(PIR, INPUT);
  pinMode(LED, OUTPUT);  
  pinMode(BUZZER, OUTPUT);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:

 val = digitalRead(PIR);
if (val == HIGH){ //if movement detected
  digitalWrite(LED, HIGH);// turn on led
   tone(BUZZER, 1000);//SEND 1KHZ SOUND SIGNAL
   delay(1000);// for 1 second 
   noTone(BUZZER);// stop sound
Serial.println("INTRUDER DETECTECTED");

}
else{
   digitalWrite(LED, LOW);
   digitalWrite( BUZZER, LOW);
   tone(BUZZER, 1000);

Serial.println("NO MOVEMENT  DETECTED");

}

  

}
QWERTY@3