diff --git a/node/code/Makefile b/node/code/Makefile
index 71a39211..9f010740 100644
--- a/node/code/Makefile
+++ b/node/code/Makefile
@@ -46,8 +46,8 @@ CFLAGS += -DEVENT_THREAD_MEDIUM_STACKSIZE='(3*1024)'
 # Uncomment to enable Wakaama debug log
 #CFLAGS += -DCONFIG_LWM2M_WITH_LOGS=1
 # Specific the server URI  address (NOTE: Domain names not supported yet)
-LWM2M_SERVER_URI ?= '"coap://[2001:db8:1::1]:5683"'
-# LWM2M_SERVER_URI ?= '"coap://[fd00:dead:beef::1]:5683"'
+# LWM2M_SERVER_URI ?= '"coap://[2001:db8:1::1]:5683"'
+LWM2M_SERVER_URI ?= '"coap://[fd00:dead:beef::1]:5683"'
 # Configure via CFLAGS only if not done via Kconfig
 ifndef CONFIG_LWM2M_SERVER_URI
   CFLAGS += -DCONFIG_LWM2M_SERVER_URI=$(LWM2M_SERVER_URI)
diff --git a/node/code/modules/display_handler/display_handler.c b/node/code/modules/display_handler/display_handler.c
index 4c16e762..98e84f76 100644
--- a/node/code/modules/display_handler/display_handler.c
+++ b/node/code/modules/display_handler/display_handler.c
@@ -64,8 +64,8 @@ handler_result_t displayHandler_handleEvent(EVENT_T event){
             right_released();
         break;
         case REGISTER_CODE:
-            //init_not_registered_code(get_register_code());
-            init_not_registered_code("Hallo Tom");
+            init_not_registered_code(get_register_code());
+            //init_not_registered_code("Hallo Tom");
             break;
         case REGISTERED:
             init_registered_no_pet();
diff --git a/node/code/modules/fsm/fsm.c b/node/code/modules/fsm/fsm.c
index 126ec5dd..bef2e857 100644
--- a/node/code/modules/fsm/fsm.c
+++ b/node/code/modules/fsm/fsm.c
@@ -196,6 +196,7 @@ handler_result_t on_handler(EVENT_T event) {
 void on_entry(void) {
     DEBUG("[FSM:on_entry_handler]: called\n");
     ioHandler_handleEvent(VIBRATE);
+    ioHandler_handleEvent(SCREEN_ON);
     traverse_state(&On_Level[0]); //wie gehe ich in den Child State
 }
 
@@ -226,6 +227,8 @@ void off_entry(void) {
         display_init();
         startDisplayThread();
     }
+    ioHandler_handleEvent(SCREEN_OFF);
+    ioHandler_handleEvent(VIBRATE);
 }
 
 void off_exit(void) {
@@ -234,8 +237,11 @@ void off_exit(void) {
 
 handler_result_t unregistered_handler(EVENT_T event) {
     switch (event) {
-        case REGISTERED:
+        case REGISTER_CODE:
             displayHandler_handleEvent(REGISTERED);
+            displayHandler_handleEvent(REGISTER_CODE);
+            return HANDLED;
+        case REGISTERED:
             traverse_state(&On_Level[1]);
             return HANDLED;
         default:
diff --git a/node/code/modules/fsm/include/events.h b/node/code/modules/fsm/include/events.h
index a7364505..1ea669de 100644
--- a/node/code/modules/fsm/include/events.h
+++ b/node/code/modules/fsm/include/events.h
@@ -54,6 +54,8 @@ typedef enum {
     PET_BORED,
     PET_DIRTY,
     VIBRATE,
+    SCREEN_OFF,
+    SCREEN_ON,
     INIT,
     REGISTER,
     REGISTERED,
diff --git a/node/code/modules/io_handler/include/init_buttons.h b/node/code/modules/io_handler/include/init_buttons.h
index bdb599ff..a74e79cd 100644
--- a/node/code/modules/io_handler/include/init_buttons.h
+++ b/node/code/modules/io_handler/include/init_buttons.h
@@ -27,6 +27,9 @@ void button_down_callback (void *arg);
 void button_right_callback (void *arg);
 void button_ok_callback (void *arg);
 
+//Screen functions:
+void screen_off(void);
+void screen_on(void);
 void timer_long_pressed_cb(void *arg);
 
 //Vibration functions prototypes:
diff --git a/node/code/modules/io_handler/init_buttons.c b/node/code/modules/io_handler/init_buttons.c
index 71dca78d..c7406851 100644
--- a/node/code/modules/io_handler/init_buttons.c
+++ b/node/code/modules/io_handler/init_buttons.c
@@ -29,6 +29,10 @@ gpio_t button_up = GPIO_PIN(0, 28); //PIN A3
 gpio_t button_down = GPIO_PIN(0, 2); //PIN A4
 gpio_t button_left = GPIO_PIN(0, 3); //PIN A5
 
+//For turning screen on and off:
+gpio_t screen_gpio = GPIO_PIN(0, 7); //PIN 6
+gpio_mode_t screen_gpio_mode = GPIO_OUT; //Define the screen GPIO as Output GPIO
+
 //Define the vibration module GPIO: 
 gpio_t vibr_gpio = GPIO_PIN(1, 9);
 gpio_mode_t vibr_gpio_mode = GPIO_OUT; //Define the vibr. GPIO as Output GPIO
@@ -50,12 +54,24 @@ int init_buttons(void)
     
     puts("Vibration Module initialization...");
     
+    //Initialize screen gpio
+    gpio_init(screen_gpio, screen_gpio_mode);
+    gpio_set(screen_gpio);
+
     //Initialize vibration module
     gpio_init(vibr_gpio, vibr_gpio_mode);
     gpio_clear(vibr_gpio);
     return 0;
 }
 
+void screen_off(void) {
+    gpio_clear(screen_gpio);
+}
+
+void screen_on(void) {
+    gpio_set(screen_gpio);
+}
+
 void timer_long_pressed_cb(void *arg) {
     (void) arg;
     long_pressed = true;
diff --git a/node/code/modules/io_handler/io_handler.c b/node/code/modules/io_handler/io_handler.c
index a5b3582d..79b03115 100644
--- a/node/code/modules/io_handler/io_handler.c
+++ b/node/code/modules/io_handler/io_handler.c
@@ -35,6 +35,14 @@ handler_result_t ioHandler_handleEvent(EVENT_T event){
             DEBUG("[IoHandler:handleEvent]: vibrate\n");
             vibrate(VIBRATE_FOR_MSEC);
         break;
+        case SCREEN_OFF:
+            DEBUG("[IoHandler:handleEvent]: screen_off\n");
+            screen_off();
+        break;
+        case SCREEN_ON:
+            DEBUG("[IoHandler:handleEvent]: screen_on\n");
+            screen_on();
+        break;
         default:
         break;
     }
diff --git a/node/code/modules/lwm2m_handler/include/device_model.h b/node/code/modules/lwm2m_handler/include/device_model.h
index 587ec1d9..9324bab9 100644
--- a/node/code/modules/lwm2m_handler/include/device_model.h
+++ b/node/code/modules/lwm2m_handler/include/device_model.h
@@ -30,7 +30,7 @@
 #include "lwm2m_client.h"
 
 #ifndef CONFIG_LWM2M_STRING_MAX_SIZE
-#define CONFIG_LWM2M_STRING_MAX_SIZE 8
+#define CONFIG_LWM2M_STRING_MAX_SIZE 20
 #endif
 
 #define LWM2M_DEVICE_STATUS_ID 0