int relayPin = 7;  // Relay control pin
int ledPin = 8;    // LED control pin

void setup() {
  pinMode(relayPin, OUTPUT); // Set relay pin as output
  pinMode(ledPin, OUTPUT);   // Set LED pin as output
}

void loop() {
  // Turn on the relay
  digitalWrite(relayPin, HIGH);
  
  // Turn on the LED
  digitalWrite(ledPin, HIGH);
  
  delay(1000); // Wait for 1 second
  
  // Turn off the relay
  digitalWrite(relayPin, LOW);
  
  // Turn off the LED
  digitalWrite(ledPin, LOW);
  
  delay(1000); // Wait for 1 second
}