The RF Board is convenient for international shipping since it is packaged in Module.RF Type Transceiver; 802.15.4 (ZigBee®) from the Evaluation board.
CC2431EMK Features
Packed in Module Transceiver; 802.15.4 (ZigBee®) Type
CC2431EMK Applications
There are a lot of Texas Instruments CC2431EMK RF Boards applications.