private bool IsPackageCorrect(byte[] buffer)
{
_recived.CopyTo(0, buffer, 0, _recived.Count - 2);
ushort crc = _packageHelper.CalcCRC(0, buffer);
ushort packageCrc = _packageHelper.CombineToUshort(new List <byte>(_recived));
return(crc == packageCrc);
}