void setup() {

  pinMode(4, INPUT_PULLUP);
  pinMode(7, INPUT);
  Serial.begin(9600);

}

void loop() {

  if(!digitalRead(4)){


    Serial.println("Ligado");


  }else{

    Serial.println("Desligado");

  }

  if(digitalRead(7)){

    Serial.println("Tem boi na roça!");


  }else{

    Serial.println("Tudo em paz!");


  }

  delay(500);

}