ANNA-B112 Stand-alone BLUETOOTH® 5 Modules u-blox ANNA-B112 Stand-alone BLUETOOTH® 5 Modules are ultra-compact SiPs featuring BLUETOOTH® 5 and an Arm® Cortex®-M4 microprocessor with FPU. These BLUETOOTH® 5 modules offer the internal antenna option despite the small size. The ANNA-B112 modules allow best-in-class capacity applications running on the BLUETOOTH® Low Energy (BLE) stack using the SDK from Nordic Semiconductor or Arm® Mbed™. These modules are delivered with u-connectXpress software that supports u-blox BLE serial port service, GATT client and server, beacons, NFC™, and simultaneous peripheral and central roles.