int pirPin = 2;    // PIR sensor output pin
int relayPin = 3;  // Relay control pin
int ledPin = 4;    // LED pin

void setup() {
  pinMode(pirPin, INPUT);     // Set PIR sensor as input
  pinMode(relayPin, OUTPUT);  // Set relay as output
  pinMode(ledPin, OUTPUT);    // Set LED as output
  digitalWrite(relayPin, LOW);  // Make sure relay is off at start
  digitalWrite(ledPin, LOW);    // Make sure LED is off at start
}

void loop() {
  int motionDetected = digitalRead(pirPin);  // Read PIR sensor value
  
  if (motionDetected == HIGH) {
    digitalWrite(relayPin, HIGH);  // Turn on relay
    digitalWrite(ledPin, HIGH);    // Turn on LED
    delay(5000);  // Keep LED and relay on for 5 seconds
  }
}