https://www.silabs.com/development-tools/wireless/bluetooth/bg27-rb4111b-efr32bg27-4-dbm-boost-wireless-radio-board
BG27-RB4111B - EFR32BG27 Wireless 2.4 GHz +4 dBm Radio Board (Boost) - Silicon Labs
The EFR32BG27 +4 dBm Radio Board (BG27-RB4111B) in CSP package with DCDC Boost is designed to work with the WSTK main board (not included) to support the...