diff --git a/FabiWare/commands.cpp b/FabiWare/commands.cpp
index 21f71a7..04261a4 100644
--- a/FabiWare/commands.cpp
+++ b/FabiWare/commands.cpp
@@ -26,7 +26,7 @@ const struct atCommandType atCommands[] PROGMEM = {
     {"SR"  , PARTYPE_NONE },  {"ER"  , PARTYPE_NONE },
     {"TS"  , PARTYPE_UINT },  {"TP"  , PARTYPE_UINT }, {"MA"  , PARTYPE_STRING},{"WA"  , PARTYPE_UINT  },
     {"TT"  , PARTYPE_UINT },  {"AP"  , PARTYPE_UINT }, {"AR"  , PARTYPE_UINT},  {"AI"  , PARTYPE_UINT  },
-    {"FR"  , PARTYPE_NONE },  {"BT"  , PARTYPE_UINT }
+    {"FR"  , PARTYPE_NONE },  {"BT"  , PARTYPE_UINT }, {"BC"  , PARTYPE_STRING}
 };
 
 void printCurrentSlot()
@@ -375,5 +375,9 @@ void performCommand (uint8_t cmd, int16_t parNum, char * parString, int8_t perio
         case CMD_BT:
               settings.bt = parNum;
               break;    
+        case CMD_BC:
+              Serial1.write(parString);
+              Serial1.write('\n'); //terminate command
+              break;              
     }
 }
diff --git a/FabiWare/commands.h b/FabiWare/commands.h
index ffeb8ee..0402a35 100644
--- a/FabiWare/commands.h
+++ b/FabiWare/commands.h
@@ -73,6 +73,7 @@
           AT FR           report free EEPROM bytes in % (starting with "FREE:") 
           AT BT <uint>    set bluetooth mode, 1=USB only, 2=BT only, 3=both(default)
                           (e.g. AT BT 2 -> send HID commands only via BT if BT-daughter board is available)
+          AT BC <string>  sends parameter to external UART (mostly ESP32 Bluetooth Addon)
 
    supported key identifiers for key press command (AT KP):
  
@@ -103,7 +104,7 @@ enum atCommands {
   CMD_ID, CMD_BM, CMD_CL, CMD_CR, CMD_CM, CMD_CD, CMD_PL, CMD_PR, CMD_PM, CMD_RL, CMD_RR, CMD_RM,
   CMD_WU, CMD_WD, CMD_WS, CMD_MX, CMD_MY, CMD_KW, CMD_KP, CMD_KR, CMD_RA, CMD_SA, CMD_LO, CMD_LA,
   CMD_LI, CMD_NE, CMD_DE, CMD_NC, CMD_SR, CMD_ER, CMD_TS, CMD_TP, CMD_MA, CMD_WA,
-  CMD_TT, CMD_AP, CMD_AR, CMD_AI, CMD_FR, CMD_BT, NUM_COMMANDS
+  CMD_TT, CMD_AP, CMD_AR, CMD_AI, CMD_FR, CMD_BT, CMD_BC, NUM_COMMANDS
 };
 
 #endif