The Code is:

#include <dht.h>

#define dht_apin A0

dht DHT;

#include <SoftwareSerial.h>

SoftwareSerial BT(10,11); // RX, TX

int vib_pin=2;

int led_pin=13;

int led = 8;                     

int val = 0;                               

void setup() {

 Serial.begin(9600);

 BT.begin(9600);

 pinMode(vib_pin,INPUT);

 pinMode(led_pin,OUTPUT);

 pinMode(7,INPUT);

 pinMode(led, OUTPUT);   

}

void loop() {

 int s;

 int inByte = 0;

 int motion = digitalRead(7);

  val = digitalRead(motion);   

 if (val == HIGH) {           

   digitalWrite(led, HIGH);  

   delay(50);                

 }

 else {

     digitalWrite(led, LOW);

     delay(50);               

   Serial.println(val);

 }

  DHT.read11(dht_apin);

   Serial.print("Current humidity = ");

   Serial.print(DHT.humidity);

   Serial.print("%  ");

   Serial.print("temperature = ");

   Serial.print(DHT.temperature);

   Serial.println("C  ");

   delay(5000);         

 BT.write(motion);

 delay(500);

 if (BT.available()){

   inByte = BT.read();

   if(inByte == 'S'){

     while(!BT.available()){}

     digitalWrite(13,HIGH);

   }

    if(inByte == 'X'){

     while(!BT.available()){}

     digitalWrite(13,LOW);

   }

    }

    Serial.println(motion);

}

The Materials are:

1. Magnetic Lock 
2. Two relays 
3. Bluetooth module
4. Breadboard 
5. PIR Sensor 
6. DHT Sensor 
7. Arduino UNO
8. LED
9. Wires 

Code For Android App

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