diff --git a/Software/Sender/Sender.ino b/Software/Sender/Sender.ino
index f892e03..6a33f48 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
new file mode 100644
index 0000000..9833687
--- /dev/null
+++ b/Software/SerialTransceiver/SerialTransceiver.ino
@@ -0,0 +1,38 @@
+/*
+ *  Demonstrates how to use LCDisplay in conjunction with SoftRS485:
+ *
+ *  The main _loop_ of this program listens on the RS485 bus.
+ *  Whenever a message is received from the bus, it is displayed on the LCD.
+ */
+
+// include the library code:
+#include <SoftRS485.h>
+
+
+#define Max485_RO 2 // read-output of Max485
+#define Max485_RE 3 // not-read-enable of Max485
+#define Max485_DE 8 // data enable of Max485
+#define Max485_DI 9 // data input of Max485
+
+#define PROGRAM "{hw:RS485-Nano rev 2.1,firmware:Transceiver,version:1.0}"
+
+String message = "";
+char c;
+void setup() {
+  Serial.begin(115200);
+  init485(Max485_RO,Max485_RE,Max485_DE,Max485_DI); // library initialization:
+  send485(PROGRAM);
+}
+
+void loop() {
+  if (available485()) Serial.println(get485message());
+  while (Serial.available()) {
+    c = (char)Serial.read();
+    if (c == '\n') {
+      send485(message.c_str());
+      message = "";
+    } else {
+      message += c;    
+    }
+  }  
+}