The module (PCB top, PCB bottom)
is used to connect home appliances to the Home Connect cloud.
The model COM1 3/21 with FCC ID 2AHES-COMGEN1 uses an
ST STM32F415 MCU (LQFP64 package, 1024kB flash)
and an external 16MBIT/2024kB SPI MX25L1606EZNI flash.
There is a 30-pin connector on the board (looks like a Hirose DF12 board-to-board/BTB), which is used to connect to the antenna PCB. The antenna PCB seems to have an 6-pin connector presumably used for programming or debugging the MCU. Unfortunately the antenna PCB is missing on my side.