 LASDevice loraLAS(node_addr,LAS_DEFAULT_ALPHA,DEFAULT_DEST_ADDR);
 #endif
 
+#ifdef SENSOR_HCS
 HCSR04 myProximitySensor(4,3);
+#endif
+#ifdef SENSOR_DHT
 DHT myDhtSensor;
+#endif
+#ifdef SENSOR_OZONE
+int ozone_value_pin = 0;
+#endif
+
 double temp;
 unsigned long lastTransmissionTime=0;
 unsigned long delayBeforeTransmit=0;

#endif

uint8_t my_appKey[4]={5, 6, 7, 8};
String probe_number = "1";

#ifdef WITH_EEPROM
struct sx1272config {

      Serial.println(r_size);
      
      int pl=r_size+app_key_offset;
//-------------------- Message send -----------------------------------

#ifdef WITH_AES
      byte iv[N_BLOCK] ;
      byte cipher [48] ;
