FSC-BT677D Bluetooth 5.2 Low Energy SoC module based on Silicon Labs EFR32BG21 chip, incorporates a 32-bit 80 MHz ARM Cortex-M33 microcontroller, delivering a maximum power output of +20 dBm and enhanced Rx sensitivity of -104.9 DBM (min.), very suitable for long range application . Utilizing low-power gecko technology, it ensures fast wake-up times and energy-saving modes, with small size design and on-board PCB antenna, this module is ideal for battery-operated applications requiring compact dimensions, high performance and low energy consumption.