sp.PortName = "COM6";

sp.BaudRate = 9600;

sp.Parity = Parity.None;

sp.DataBits = 8;

sp.StopBits = StopBits.One;

sp.Open();

byte[] bytestosend = { 0x14, 0x0E };

​

sp.Write(bytestosend, 0, bytestosend.Length);

sp.Close();

sp.Dispose();

sp = null;