BMD-345 Bluetooth Module u-blox BMD-345 Bluetooth Module is an advanced, highly flexible, low-power multiprotocol system on module (SoM). This module enables Bluetooth 5 low energy and IEEE 802.15.4 (Thread and Zigbee) connectivity for portable and low-power embedded systems. The BMD-345 module comes with an Arm® Cortex®-M4 with FPU processor, integrated 2.4GHz transceiver, RF power and low noise amplifiers (PA/LNA), and U.FL connector. This BMD-345 provides a full RF solution that enables a faster time to market with reduced development costs and full use of Nordic's nRF52840 capabilities and peripherals.