diff --git a/app/src/main/java/us/keiran/suitleds/MainActivity.java b/app/src/main/java/us/keiran/suitleds/MainActivity.java
index 995c89a..cecd5cb 100755
--- a/app/src/main/java/us/keiran/suitleds/MainActivity.java
+++ b/app/src/main/java/us/keiran/suitleds/MainActivity.java
@@ -141,7 +141,7 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
                 try {
                     //send data to service
                     value = message.getBytes("UTF-8");
-                    mService.writeRXCharacteristic(value);
+                    mService.sendDataWithCRC(value);
                     //Update the log with time stamp
                     String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
                     listAdapter.add("["+currentDateTimeString+"] TX: "+ message);
@@ -161,11 +161,11 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
                 byte[] value;
                 try {
                     //send data to service
-                    value = "!PR".getBytes("UTF-8");
+                    value = "pr".getBytes("UTF-8");
                     mService.sendDataWithCRC(value);
                     //Update the log with time stamp
                     String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
-                    listAdapter.add("["+currentDateTimeString+"] TX: "+ "!PR");
+                    listAdapter.add("["+currentDateTimeString+"] TX: "+ "pr");
                     messageListView.smoothScrollToPosition(listAdapter.getCount() - 1);
                 } catch (UnsupportedEncodingException e) {
                     // TODO Auto-generated catch block