int ledrood = 4;

int sirene = 6;

int RFsense = 2;

int RFsensewaarde;

int teller = 0;

int limietteller = 180;



void setup()

     {

        pinMode(ledrood, OUTPUT);

        pinMode(sirene, OUTPUT);

        pinMode(RFsense, INPUT);

        digitalWrite(ledrood, LOW);

        digitalWrite(sirene, LOW);

        Serial.begin(9600);

      }



void loop()

      {

         RFsensewaarde = digitalRead(RFsense);

         if (RFsensewaarde == LOW)

           {

             teller = teller + 1;

             delay(1000);

             digitalWrite(ledrood, HIGH);

            }

          if (RFsensewaarde == HIGH)

            {

              teller = 0;

              digitalWrite(ledrood, LOW);

            }

          if (teller > limietteller)

            {

              digitalWrite(sirene, HIGH);

             }

          if (teller < limietteller)

             {

               digitalWrite(sirene, LOW);

              }

       }