#define IR_SENSOR 2
#define BUZZER 8

void setup() {
  pinMode(IR_SENSOR, INPUT);
  pinMode(BUZZER, OUTPUT);
  Serial.begin(9600);
  Serial.println("System Ready - Monitoring for Intrusion...");
}

void loop() {
  int irState = digitalRead(IR_SENSOR);

  if (irState == LOW) { // Object detected (typical IR sensor behavior)
    digitalWrite(BUZZER, HIGH);
    Serial.println("🚨 Intrusion Detected!");
  } else {
    digitalWrite(BUZZER, LOW);
    Serial.println("Area Clear.");
  }

  delay(500); // Small delay to avoid flooding the serial monitor
}