diff --git a/main/format.cpp b/main/format.cpp
index 37140f0..644c5e7 100644
--- a/main/format.cpp
+++ b/main/format.cpp
@@ -66,6 +66,9 @@ uint8_t Format_String(char *Out, const char *String, uint8_t MinLen, uint8_t Max
 void Format_Hex( void (*Output)(char), uint8_t Byte )
 { (*Output)(HexDigit(Byte>>4)); (*Output)(HexDigit(Byte&0x0F)); }
 
+void Format_HexBytes( void (*Output)(char), const uint8_t *Byte, uint8_t Bytes)
+{ for(uint8_t Idx=0; Idx<Bytes; Idx++) Format_Hex(Output, Byte[Idx]); }
+
 void Format_Hex( void (*Output)(char), uint16_t Word )
 { Format_Hex(Output, (uint8_t)(Word>>8)); Format_Hex(Output, (uint8_t)Word); }
 
@@ -188,6 +191,12 @@ uint8_t Format_SignDec(char *Out, int32_t Value, uint8_t MinDigits, uint8_t DecP
 uint8_t Format_Hex( char *Output, uint8_t Byte )
 { (*Output++) = HexDigit(Byte>>4); (*Output++)=HexDigit(Byte&0x0F); return 2; }
 
+uint8_t Format_HexBytes( char *Output, const uint8_t *Byte, uint8_t Bytes)
+{ uint8_t Len=0;
+  for(uint8_t Idx=0; Idx<Bytes; Idx++)
+    Len+=Format_Hex(Output, Byte[Idx]);
+  return Len;  }
+
 uint8_t Format_Hex( char *Output, uint16_t Word )
 { Format_Hex(Output, (uint8_t)(Word>>8)); Format_Hex(Output+2, (uint8_t)Word); return 4; }
 
diff --git a/main/format.h b/main/format.h
index b92e600..8982d0a 100644
--- a/main/format.h
+++ b/main/format.h
@@ -16,7 +16,9 @@ void Format_String( void (*Output)(char), const    char *String, uint8_t MinLen,
 void Format_Hex( void (*Output)(char), uint8_t  Byte );
 void Format_Hex( void (*Output)(char), uint16_t Word );
 void Format_Hex( void (*Output)(char), uint32_t Word );
-void Format_MAC( void (*Output)(char), uint8_t *MAC, uint8_t Len=6);
+void Format_MAC( void (*Output)(char), const uint8_t *MAC, uint8_t Len=6);
+
+void Format_HexBytes( void (*Output)(char), const uint8_t *Byte, uint8_t Bytes);
 
 void Format_UnsDec ( void (*Output)(char), uint16_t Value, uint8_t MinDigits=1, uint8_t DecPoint=0);
 void Format_SignDec( void (*Output)(char),  int16_t Value, uint8_t MinDigits=1, uint8_t DecPoint=0, uint8_t NoPlus=0);
@@ -39,6 +41,8 @@ uint8_t Format_Hex(char *Output, uint32_t Word );
 uint8_t Format_Hex(char *Output, uint32_t Word, uint8_t Digits);
 uint8_t Format_Hex(char *Output, uint64_t Word );
 
+uint8_t Format_HexBytes(char *Output, const uint8_t *Byte, uint8_t Bytes);
+
 // uint8_t Format_Hex(char *Output, const uint8_t *Bytes, uint8_t Len );
 
 // uint8_t Format_Hex( char *Output, uint64_t Word, uint8_t Digits);