The RF modules are not standalone module, SoC modules are standalone module, the definition of RF module and SoC module is set forth below.
RF modules do NOT have on-board MCU to run Bluetooth stack, it’s mandatory to have an external host MCU
FSC-BT825B, FSC-BT805B, FSC-BW101, FSC-BW121, etc, are RF module
SoC modules have on-board MCU to run Bluetooth stack, it’s NOT mandatory to have an external host MCU.
In our porfolios, All of BLE modules, most of Bluetooth dual mode modules and audio modules are SoC module