diff --git a/ST-B-L072Z-LRWAN1/longfi-us915-cayenne-sensor/longfi-us915-cayenne-sensor.ino b/ST-B-L072Z-LRWAN1/longfi-us915-cayenne-sensor/longfi-us915-cayenne-sensor.ino
index 59e961e..5517676 100644
--- a/ST-B-L072Z-LRWAN1/longfi-us915-cayenne-sensor/longfi-us915-cayenne-sensor.ino
+++ b/ST-B-L072Z-LRWAN1/longfi-us915-cayenne-sensor/longfi-us915-cayenne-sensor.ino
@@ -128,5 +128,5 @@ void loop( void )
     LoRaWAN.sendPacket(1, lpp.getBuffer(), lpp.getSize());
   }
 
-  delay(20000);
+  delay(20000); //20 Seconds
 }
\ No newline at end of file
diff --git a/ST-B-L072Z-LRWAN1/longfi-us915/longfi-us915.ino b/ST-B-L072Z-LRWAN1/longfi-us915/longfi-us915.ino
index eb6fae1..3a09f64 100644
--- a/ST-B-L072Z-LRWAN1/longfi-us915/longfi-us915.ino
+++ b/ST-B-L072Z-LRWAN1/longfi-us915/longfi-us915.ino
@@ -52,5 +52,5 @@ void loop( void )
         LoRaWAN.sendPacket(1, payload, sizeof(payload));
     }
 
-    delay(20000);
+    delay(20000); //20 Seconds
 }
\ No newline at end of file