CCTV Camera Alarm notification alert get it on mobile phone by Missed Call and SMS Text Message

get notification mobile call and sms text message when CCTV camera system detects Intruder or motion detection activity. CCTV Camera system send SMS Message notification using Arduino and Sim800L GSM Module

Arduino Uno : https://amzn.to/310xVCa

SIM800L GPRS GSM Module : https://amzn.to/3HgLvB6

LM2596 DC to DC Buck Converter : https://amzn.to/3quyzRi

DC 5V 2Amp Power Supply : https://amzn.to/32nb1Wz

#include <SoftwareSerial.h>

SoftwareSerial mySerial(2, 3);                     // RX,TX for Arduino and for the module it's TXD RXD, they should be inverted


const int buttonPin = 7;                          // the number of the pushbutton pin
int buttonState = 0;                              // variable for reading the pushbutton status

int state = 0;


void setup()
{
 

  mySerial.begin(9600);                          //Module baude rate, this is on max, it depends on the version
  Serial.begin(9600);   
  Serial.println("Initializing...");
  delay(1000);

  mySerial.println("AT");                 // Sends an ATTENTION command, reply should be OK
  Serial.println("AT");                 // Sends an ATTENTION command, reply should be OK
  mySerial.println("AT+CMGF=1");          // Configuration for sending SMS
  Serial.println("AT+CMGF=1");
  delay(500);
  
  while (Serial.available()) {
    mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
  }

  while (mySerial.available()) {
    Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
  }
  
}
 
void loop()
{
  pinMode(buttonPin, INPUT);
  buttonState = digitalRead(buttonPin);
  delay(1000);                                    // Delay time to Arm the SMS
  if (buttonState == HIGH && state == 0) { 
  SendSMS();
  delay(60000);                                   // Delay time for next SMS
 }
 
 if (buttonState == LOW && state == 1) {
    state = 0;
  }


}
 
void SendSMS()
{

  Serial.println("Sending SMS...");               //Show this message on serial monitor
  mySerial.print("AT+CMGF=1\r");                   //Set the module to SMS mode
  delay(100);
  mySerial.print("AT+CMGS=\"+917411XXXXXX\"\r");  //SMS | Your phone number don't forget to include your country code, example +91XXXXXXXXXX"
  delay(500);
  mySerial.print("CCTV ALARM");                   //This is the text to send to the phone number, don't make it too long or you have to modify the SoftwareSerial buffer
  delay(500);
  mySerial.print((char)26);                       // (required according to the datasheet)
  delay(500);
  mySerial.println();
  Serial.println("Text Sent.");
  delay(10000);
  mySerial.println("AT");                        //Once the handshake test is successful, i t will back to OK
  mySerial.println("ATD+ +917598XXXXXX;");       //CALL | Your phone number don't forget to include your country code, example +91XXXXXXXXXX"
  Serial.println("Calling");
  delay(20000); // wait for 20 seconds...
  mySerial.println("ATH"); //hang up
  state = 1;
}