#include<Servo.h>
Servo servo;
const int sen = 13;    
const int relay =12;   
void setup() 
{
  pinMode(sen, INPUT);
  pinMode(relay, OUTPUT);
  Serial.begin(9600);
  servo.attach(11);
}
void loop() 
{
  int senVal = digitalRead(sen); 
  if (senVal == HIGH) 
  {
    servo.write(180);
    digitalWrite(relay, HIGH);
    delay(1000);
    Serial.println("motion Detected.Door unlocking");

  } else {
    Serial.println("No motion.Door locking");
    digitalWrite(relay, LOW);
    servo.write(0);
    
  }
  delay(100);  
}