const int PIR_SENSOR_PIN = 12;
const int RELAY_PIN = 13;
const int LED_Open = 2;         // Open switch indicator
const int LED_Closed = 3;       // Closed switch indicator

unsigned long motionDetectedTime = 0;  // To keep track of the last motion detected time
bool motionDetected = false;           // To keep track of whether motion was detected

void setup() {
  pinMode(PIR_SENSOR_PIN, INPUT);
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);
}

void loop() {
  int pirValue = digitalRead(PIR_SENSOR_PIN);  // Read PIR sensor value
  
  if (pirValue == HIGH) {  // If motion is detected
    digitalWrite(RELAY_PIN, HIGH);
    digitalWrite(LED_Closed, HIGH);
    digitalWrite(LED_Open, LOW);
    motionDetected = true;          // Set motion detected flag
    motionDetectedTime = millis();  // Update the time motion was detected
  } else {  // If no motion is detected
    if (motionDetected && (millis() - motionDetectedTime) >= 10000) {  // Check if 10 seconds have passed
      digitalWrite(RELAY_PIN, LOW);
      digitalWrite(LED_Open, HIGH);
      digitalWrite(LED_Closed, LOW);
      motionDetected = false;        // Reset motion detected flag
    }
  }
}