diff --git a/Software/Sender/Sender.ino b/Software/Sender/Sender.ino
index 1cbb37d..6c39d43 100644
--- a/Software/Sender/Sender.ino
+++ b/Software/Sender/Sender.ino
@@ -18,11 +18,12 @@
 #define Max485_DI 9 // data input of Max485
 
 #define TRESHOLD 1024
-#define ID 0
+#define ID 4
 // 0=Test
 // 1=Arbeitszimmer
 // 2=Küche
 // 3=Bad
+// 4=Treppenhaus
 
 //#define LOG_TO_SERIAL
 #define SEND_485
diff --git a/Software/SerialTransceiver/SerialTransceiver.ino b/Software/SerialTransceiver/SerialTransceiver.ino
index e97d7bd..9833687 100644
--- a/Software/SerialTransceiver/SerialTransceiver.ino
+++ b/Software/SerialTransceiver/SerialTransceiver.ino
@@ -26,7 +26,7 @@ void setup() {
 
 void loop() {
   if (available485()) Serial.println(get485message());
-  if (Serial.available()) {
+  while (Serial.available()) {
     c = (char)Serial.read();
     if (c == '\n') {
       send485(message.c_str());