docs: private String getDPT()
  	{
  		final String dpt = (String) options.get("dpt");
  		if (dpt.equals("switch"))
  			return "1.001";
  		if (dpt.equals("bool"))
  			return "1.002";
  		if (dpt.equals("string"))
  			return "16.001";
  		if (dpt.equals("float"))
  			return "9.002";
  		if (dpt.equals("ucount"))
  			return "5.010";
  		if (dpt.equals("angle"))
  			return "5.003";
  		return dpt;
  	}