FSC-DB004-PIN Development Board, it supports Arduino Bluetooth connectivity development. It supports various Bluetooth modules with 13mm × 26.9mm stamp 36-pin package, such as FSC-BT616, FSC-BT618, FSC-BT826, FSC-BT836, and FSC-BT986 etc. Compared to using individual Bluetooth modules, the FSC-DB004 development board offers users greater convenience and ease in testing their products, saving time and ensuring safety during testing processes.