diff --git a/Telegram/TelegramUtil.py b/Telegram/TelegramUtil.py
index d2f313f..83da193 100644
--- a/Telegram/TelegramUtil.py
+++ b/Telegram/TelegramUtil.py
@@ -2,7 +2,7 @@ from time import sleep
 
 import serial
 
-INPUT_PORT = '/dev/ttyUSB0'
+INPUT_PORT = '/dev/ttyUSB1'
 OUTPUT_PORT = '/dev/ttyUSB0'
 
 serialInput = serial.Serial(INPUT_PORT, 115200, timeout=1)
@@ -16,4 +16,9 @@ def lees():
 def verzend(telegram):
     serialOutput.write(telegram.__str__().encode('ascii'))
     print(telegram)
-    sleep(1)
\ No newline at end of file
+    sleep(1)
+
+def doorstroom():
+    line = serialInput.readline()
+    serialOutput.write(line)
+    print(line)
\ No newline at end of file
diff --git a/__main__.py b/__main__.py
index 05ddacc..0ffdb08 100644
--- a/__main__.py
+++ b/__main__.py
@@ -1,8 +1,8 @@
 from Telegram.Telegram import Telegram
 from Telegram.TelegramData import TelegramData
-from Telegram.TelegramUtil import verzend
+from Telegram.TelegramUtil import verzend, doorstroom
 
 if __name__ == '__main__':
     telegram = Telegram()
     while True:
-        verzend(telegram)
\ No newline at end of file
+        doorstroom()
\ No newline at end of file