The Xbee modules from Digi international offers two variants depending on mounting technology: S2B module (Through Hole Technology) and S2C
(Surface Mount Technology).
If you buy the XBee Programmable S2C kit you will receive a Programmable XBee S2C module (SMD module) and a XBee S2C development board
(apart from other accessories like a USB X-Stick).
If
you want to build a prototype with these modules you need to connect wires from
the module to a breadboard. However, most of breadboards’ pitches are 2.54 mm
and the XBee modules 2 mm. This complicates things apart from the fact that S2C
are SMT devices.
Furthermore, some pins
of the S2C module are connected to the development board, so if you want to use
those lines for other purpose you need to disconnect those pins from the
development board, but in the default kit you are not able to do that. You would have to unplug
the S2C module and solder it in your proto board, but that is not a good
solution unless you have plenty of modules.
The best solution for building a prototype with the Programmble XBee S2C is to use an intermediate board between the development board and the S2C
module like the one shown below:
With that board you can isolate any S2C pin from the development board by removing the jumper associated to the proper line.