diff --git a/ESP32-IDF_Temperture-Node-v2/main/config.h b/ESP32-IDF_Temperture-Node-v2/main/config.h
index 344702898..ee47b8a58 100644
--- a/ESP32-IDF_Temperture-Node-v2/main/config.h
+++ b/ESP32-IDF_Temperture-Node-v2/main/config.h
@@ -1,3 +1,7 @@
+/*
+    Configuration variables with values
+*/
+
 #define SDA_PIN 21
 #define SCL_PIN 22
 #define I2C_FREQ_HZ 100000
\ No newline at end of file