//define the pins
#define PIRPin 2
#define BuzzerPin 3
#define LEDPin 4

void setup() {
  // put your setup code here, to run once:



// setup in modes for the peripheral devices
pinMode(PIRPin, INPUT);
pinMode(BuzzerPin, OUTPUT);
pinMode(LEDPin, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:


// if motion is detected PIRPin will go HIGH

if(digitalRead(PIRPin)==HIGH){


// Activate alarm and LED

  digitalWrite(LEDPin, HIGH);
  digitalWrite(BuzzerPin, HIGH);
  delay(3000);
  digitalWrite(LEDPin, LOW);
  digitalWrite(BuzzerPin, LOW);

}


}