Silicon Labs FGM230S +14dBm Radio Board works with the WSTK main board (not included) to support the development of Wireless IoT devices. The Silicon Labs devices are based on Sub-GHz wireless protocols for Proprietary, Connect, Wi-SUN, Sidewalk, and WM-BUS. The kit includes a +20dBm 868 or 915MHz radio board that provides a complete reference design for the FGM230S module, with the matching network for +14dBm covering 868 or 915MHz.