GPRSbee

The GPRSbee can be directly connected to a desktop computer using an USB adapter like the Xbee Explorer USB or the UARTSbee for easy development of AT command scripts.

The GPRSbee has a manual on/off switch to simplify the use in these USB adapters.   
Note that the first AT command that you sent has to be in capital letters. 

The GPRSbee is by default configured to use automatic baud rate. It will recognise the first AT command and set itself to the baudrate that command is sent at. We advise to use 19200 as standard baud rate.

The complete AT command manual can be downloaded here.