#define LED_UP 13
#define LED_DOWN 12 
#define buzz 1
#define PIR 2

void setup() {
  pinMode(LED_UP, OUTPUT);
  pinMode(LED_DOWN, OUTPUT);
  pinMode(buzz, OUTPUT);
  pinMode(PIR, INPUT);
  digitalWrite(LED_UP, LOW);
  digitalWrite(LED_DOWN, LOW);
}

void loop() {
  if (digitalRead(PIR)==HIGH){
    tone(buzz, 500);
    digitalWrite(LED_UP, HIGH);
    digitalWrite(LED_DOWN, LOW);
    delay(200);
    noTone(buzz);
    tone(buzz, 400);
    digitalWrite(LED_UP, LOW);
    digitalWrite(LED_DOWN, HIGH);
    delay(200);
    noTone(buzz);
  }else {
    noTone(buzz);
  }

}