int buz=2;
int PIR_motion=4;
int LED=6;
void setup() {
  // put your setup code here, to run once:
  pinMode(buz, OUTPUT);
  pinMode(PIR_motion, INPUT);
  pinMode(LED, OUTPUT);
 
 

}

void loop() {
  // put your main code here, to run repeatedly:
  
if(digitalRead(PIR_motion)==1){
  

digitalWrite(buz, HIGH);
  delay(100); 
  digitalWrite(buz, LOW);
  delay(100); 




  }
  
  else 
  {
  

  digitalWrite(LED, HIGH);
  delay(1000); 
  digitalWrite(LED, LOW);
  delay(1000); 
  
  
  }
}