const int PIR_PIN = 8;
const int POWER_PIN = 9;
const int RELAY_PIN = 10;

void setup() {
  Serial.begin(9600);
  Serial.println("Sistema de Alarme com Sensor de Movimento");
  pinMode(PIR_PIN, INPUT);
  pinMode(POWER_PIN, OUTPUT);
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(POWER_PIN, HIGH);
}

void loop() {
  if (digitalRead(PIR_PIN) == LOW) {
    digitalWrite(RELAY_PIN, LOW);
  }
  
  if (digitalRead(PIR_PIN) == HIGH) {
    Serial.println("Alarme Ativado!");
    delay(10000);
  }
}