theft_monitoring_system.txt

#include <LiquidCrystal.h>
LiquidCrystal lcd(13,12,6,5,3,2);
int led=7;
int PIR=4;
int buzzer=8;
int PIRstatus;

void setup()
{
  lcd.begin(16,2);
  pinMode(led,OUTPUT);
  pinMode(buzzer,OUTPUT);
  pinMode(PIR,INPUT);
  lcd.clear();
}
void loop()
{
  PIRstatus=digitalRead(PIR);
if (PIRstatus==HIGH){
    lcd.clear();
    digitalWrite(led,HIGH);
    digitalWrite(buzzer,HIGH);
    tone(buzzer, 300, 10000);     //tone(pin,frequency,Duration)
    lcd.setCursor(0, 1);
    lcd.print("THIEF ALERT!!");
    
    delay(7000);
    lcd.clear();
}
else
{
  lcd.setCursor(0,0);
  lcd.print("SAFE!!");
  digitalWrite(led, LOW);
  digitalWrite(buzzer, LOW);
}
delay(3000);
}