Ok. Thank you for clearing that up. I was merely omitting the comma then. Thank you so much for your help.

Yes. That helps very much. Thanks for the speedy reply.

The only thing I can't figure out now is how to issue commands to the module via the serial port. The documentation online tells you what the Hex, decimal and ascii codes are, but if I send the string "254 88" (clear screen) the numbers show ...

Does anyone know if the serial cable used for power and communication through the db9 is a null-modem cable or just a pin-to-pin cable.