int sensorPin = 2;
int value = 0;

void setup() {
  pinMode(sensorPin, INPUT_PULLUP);
  Serial.begin(9600);
}

void loop() {
  value = digitalRead(sensorPin);
  
  if (value == HIGH)
  {
    Serial.println("Unterbrochen");
  }
  else
  {
    Serial.println("Nicht unterbrochen");
  }
  
  delay(1000);
}