diff --git a/arduino/node-code/node-code-final/node-code-final.ino b/arduino/node-code/node-code-final/node-code-final.ino
index 5ac6157..b165275 100644
--- a/arduino/node-code/node-code-final/node-code-final.ino
+++ b/arduino/node-code/node-code-final/node-code-final.ino
@@ -21,6 +21,9 @@
 #define i2c_adress 0x3c
 #define USE_SERIAL Serial
 
+// define node identification number
+#define nodeIdentvicationNumber 1
+
 // make new objects
 Adafruit_SH1106G display = Adafruit_SH1106G(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);
 DHT dht(DHTPIN, DHTTYPE);
@@ -149,7 +152,8 @@ void update(){
   // display sensordata on oled screen
   displayData();
   
-  webSocket.sendTXT("{\"Temp\":\"" + String(temperature) + "\",\"Humi\":\"" + String(humidity) + "\",\"eCO2\":\"" + String(sgp.eCO2) + "\",\"TVOC\":\"" + String(sgp.TVOC) + "\"}");
+  // webSocket.sendTXT("{\"Temp\":\"" + String(temperature) + "\",\"Humi\":\"" + String(humidity) + "\",\"eCO2\":\"" + String(sgp.eCO2) + "\",\"TVOC\":\"" + String(sgp.TVOC) + "\"}");
+  webSocket.sendTXT("{\"node\": \"" + nodeIdentvicationNumber + "\", \"Temp\":\"" + String(temperature) + "\",\"Humi\":\"" + String(humidity) + "\",\"eCO2\":\"" + String(sgp.eCO2) + "\",\"TVOC\":\"" + String(sgp.TVOC) + "\"}");
 
   sgp.getIAQBaseline(&eCO2_base, &TVOC_base);