Silicon Labs EFR32xG27 Radio Boards (xG27-RB41x) feature a Cortex-M33 MCU with 768kB Flash and 64kB RAM, Secure Vault® Mid, and U.FL for RF measurements. These 2.4GHz Radio Boards offer either +4dBm or +8dBm in either buck or boost formats. Silicon Labs EFR32xG27 Radio Boards are designed for use with the EFR32xG27 Wireless Gecko SoCs.