Silicon Labs xG28-RB4401C 868-915MHz +20dBm + 2.4Ghz BLE Radio Board Kit is designed to work with the STK main board to support the development of Wireless IoT devices. These devices are based on Sub-GHz and 2.4GHz BLE wireless protocols for Proprietary, Connect, Z-wave, Wi-SUN, and BLUETOOTH® Low Energy. The kit includes an SMA antenna connector and a +20dBm 915MHz radio board, providing a complete reference design for the Silicon Labs EFR32FG28 Wireless SoC.