Based on ARM: Cortex-M33 32-bit processor. Support BLE: 2.4GHz multi-protocol. Supports BLE protocol stack from: 4.x to 5.2. Up to 512KB of FLASH and 32KB of RAM. Support 14 general-purpose I/O ports, configurable mapping and Can be used as a BLE data transmission module or as an MCU alone. Support a universal serial interface UART communication. Support AT command to reset module, get MAC address.