Send SMS to two different number when any fault is detected

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                  fig1:GSM Module 
 PROGRAM
/* Send SMS to two different number when any fault is detected
  pin 5 used to detect fault commenly any sensor
  pin 7 to turn ON the whole system
  pin12 turn OFF the power to the machine usually a relay

created 2017
 by Alwin Thomas
 modified 9 Apr 2017
 by Arun Prabhakaran P
*/

const int SENSORPIN = 5;
const int RELAY = 12;
const int KEY = 7;
int s = 0;

void SendSMS()
{
  Serial.print("AT+CMGF=1");
  Serial.write(0x0D);
  delay(2000);
  Serial.print("AT+CMGS=");
  Serial.write(0x22);
  Serial.print("9048316362");
  Serial.write(0x22);
  Serial.write(0x0D);
  delay(2000);

  Serial.print(" WARNING! ");
  Serial.print("POLLUTION DETECTED");
  Serial.write(0x1A);
  delay(3000);


 /* Sending Message 2 */
  Serial.print("AT+CMGF=1");
  Serial.write(0x0D);
  delay(2000);
  Serial.print("AT+CMGS=");
  Serial.write(0x22);
  Serial.print("9746683166");
  Serial.write(0x22);
  Serial.write(0x0D);
  delay(2000);

  Serial.print(" POLLUTION DETECTED ");
  Serial.write(0x1A);
  delay(3000);

}

int  SENSORSTATE = 0;
int  RELAYSTATE = 0;
int KEYSTATE = 0;

void setup() {
  Serial.begin(9600);  
  delay(100);

  Serial.println("System Ready....");


  pinMode(SENSORSTATE, INPUT);
  pinMode(RELAY, OUTPUT);
  pinMode(KEY, INPUT);
}

void loop() {
  SENSORSTATE = digitalRead(SENSORPIN);
  RELAYSTATE = digitalRead(RELAY);
  KEYSTATE = digitalRead(KEY);



  if ((digitalRead(KEY) == HIGH) && (digitalRead(SENSORPIN) == LOW)) {
    Serial.println("Starting Vehicle");
    digitalWrite(RELAY, HIGH);
    s = 0;
  }

   else if ( (digitalRead(KEY) == HIGH) && (digitalRead(SENSORPIN) == 1) ) {
   Serial.println("Sensor Error....");
  digitalWrite(RELAY, LOW);

   if (s == 0) {
      Serial.println("Sending Message");
      SendSMS();
      s = 1;
    }
  }
  else {
    digitalWrite(RELAY, LOW);
  }
}






fig :2
                                                                                                         Arun Prabhakaran P,
                                                                                                            +91 8907735577
                                                                                                                  (B.E ECE)
                                                                                                        
Location: Bengaluru, Karnataka, India

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