void setup()
{
  pinMode(13,OUTPUT);
  pinMode(12,INPUT);
}

void loop()
{
  if (digitalRead(12) == HIGH) // this will activate ONLY IF pin 12 is HIGH
  {
    digitalWrite(13,HIGH);
    delay(map(analogRead(A0),0,1023,0,600000)); // delayed based off POT value
    digitalWrite(13,LOW);
    delay(map(analogRead(A0),0,1023,0,600000)); // same as above, except delayed in the off position - this will give time to turn phone or alarm off!
  }// will loop back to top of if statement and will not start again until pin 12 is high
  else
  {
    digitalWrite(13,LOW);
  }
}