int Fan=6, Light=7, Fridge=8;
void setup() {
 Serial.begin(9600);    
 pinMode(Light,OUTPUT);              //TEM
 pinMode(Fridge,OUTPUT);            //pir  1
 pinMode(Fan,OUTPUT);           //LED 1
 
}

void loop() {
  if(Serial.available()>0)
  {
 String Msg=Serial.readStringUntil('\n');
if(Msg=="Fan_ON")
{

  digitalWrite(Fan, HIGH);
}
else if(Msg=="Light_ON")
{
  digitalWrite(Light, HIGH);
}
else if(Msg=="Light_OFF")
{
  digitalWrite(Light, LOW);
}
else if(Msg=="Fan_OFF")
{

  digitalWrite(Fan, LOW);
}
  }
                                                //bluetooth
}