public SerialMessage(byte[] a,int l){
  super(String.valueOf(a));
  setResponseLength(l);
  setBinary(true);
  setTimeout(5000);
}

public SerialMessage ( byte [ ] a , int l ) { super ( String . valueOf ( a ) ) ; setResponseLength ( l ) ; setBinary ( true ) ; setTimeout ( 5000 ) ; }
this ctor interprets the byte array as a sequence of characters to send .
