A RF type of Transceiver; 802.11 b/g/n (Wi-Fi, WiFi, WLAN) is provided by the Evaluation board.The RF Board comes from the well-known Wizard Gecko series.
SLWSTK6121A Features
Transceiver; 802.11 b/g/n (Wi-Fi, WiFi, WLAN) Type
SLWSTK6121A Applications
There are a lot of Silicon Labs SLWSTK6121A RF Boards applications.