NINA-B3 Stand-Alone Bluetooth 5 Low Energy Modules U-Blox NINA-B3 Stand-Alone Bluetooth® 5 Low Energy Modules feature full Bluetooth 5 support, a powerful Arm® Cortex®-M4 with FPU, and state-of-the-art power performance. The embedded low power crystal improves power consumption by enabling optimal power save modes. The NINA-B3 modules include two sub-series – the NINA-B30 and the NINA-B31 series. The NINA-B30 series provides an open CPU architecture with a powerful MCU for customer applications, while the NINA-B31 series are delivered with u-connectXpress or u-connectScript software pre-flashed. The professional-grade NINA-B3 series modules are globally certified for use with the internal antenna or a range of external antennas. The internal antennas are specifically designed for the small NINA form factor and provide an extensive range, independent of the ground plane and component placement. This greatly reduces time, cost, and effort for users integrating these modules in their designs.