The Arduino Wireless SD shield brings wireless communication to the Arduino with its XBee compatible socket. The socket supports the XBee modules from Digi but can use any module with the same footprint. Wireless range is up to 30m indoors and up to 100m line of sight outdoors depending on the module and conditions. Communication can be as simple as point to point serial transfer or more complex broadcast or mesh network modes. A library is available to drive an XBee in API mode and there are a number of getting started guides on the internet. An onboard switch connects the wireless module to either the microcontroller or the USB-to-serial converter.
The shield also includes an SD card slot that is accessible using the Arduino SD Library which is free to download. A small prototype area is included for your own circuitry, for example a sensor or two to make your Arduino into a wireless sensor platform.
